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thereby in one act destroying a distinguished New England law firm. The shock was compounded by the fact that the remaining partners did not even try to reconstitute the firm, but instead interpreted this mass exodus as a sign that the firm could no longer survive. Closer examination reveals that the problems went back many years,perhaps several decades. Through the middle of the twentieth century, Hill and Barlow did indeed have a deserved reputation as a firm of outstanding lawyer statesmen who not only were leaders in litigation and trusts, but who also stood out for their service to the community. Yet, on my analysis, this sterling reputation turns out to have been a mixed blessing. By the 1970s and 1980s, the situation in law had changed dramatically throughout the land. Whether lamented or not, the era of the lawyer statesman was over. Law firms were becoming much larger and more internationalized; corporate law divisions and the high-metabolism specialty of mergers and acquisitions were growing morerapidly than other spheres; many large corporations built up their own in- house legal teams; and individual lawyers were becoming far more mobile, as opportunities to make very large salaries materialized for those who were willing to jump ship. None of these trends in itself necessitated a de-professionalization of the law. And indeed, many moderately sized law firms in New England and elsewhere took steps to modulate these trends: they increased in size or developed distinctive niches; they actively sought largecorporate clients; and they reconfigured salary schedules to reward those lawyers who brought in the most business. Perhaps most importantly, the more reflective firms realized that law was becoming more ofa business; they recruited or trained professional managers; they were sensitive to the clout of specific partners and divisions; they paid close attention to changing patterns of income and expenses; they established governance vehicles whereby the most important members consulted regularly about trends and how best to meet them; they favored frequent, open, frank communications about all matters that materially affected the firm; and they were prepared, when necessary and with regret, to retire or marginalize partners who could not in any demonstrable way contribute to the well-being of the firm. According to our interviews with former members of Hill and Barlow, the firm did not seriously undertake any of these measures. Memberscontinued to take pride in the history of the firm, and many continued to serve the community in various ways. But they did not work any longer as a firm of dedicated partners (epithets such as 'a hotel forlawyers and 'university-style governance were used 11 informants).Costs spiraled, but steps were not taken to increase income commensurately (or to lower costs, for example, by reducing the number of associates or moving to less luxurious quarters). Most damaging, the lawfirm never was able to create a governance structure that was widelyrespected by its members and that could meet these various challenges. On my analysis, it was the combination of the inordinately successful real estate group, on the one hand, and the ensemble of dysfunctional governance structures, on the other, that made the firm's closure inevitable. I do not conclude that the Hill and Barlow partners necessarily compromised their practice of law per se. I do believe that both the real estate division, and the remaining partners who failed to deal decisively with the shifting terrain, undermined law as a profession. Inacting in their own self-interest, they contributed to the destruction of the accumulated wisdom, public service emphasis, and pluralistic view of legal practice that had once characterized Hill and Barlow.To the extent that law simply becomes a collection of free-agent practitioners, for sale to the highest bidder, or a set of employees of multinational corporations, it will indeed be a diminished profession. Accounting became a technical rather than back-of-the-envelope practice in the seventeenth and eighteenth centuries with the widespreaduse of double-entry bookkeeping and other financial and business innovations. With the rise of corporations a century ago, and the adventof increasingly complex taxation and investment policies, the role of the independent certified auditor gained steadily in importance. Particularly at times of crisis, such as the stock market collapses during the first two-thirds of the twentieth century, the public was reminded of the importance of the accounting professions. Perhaps to hisadvantage, the auditor was seen as a rather colorless individual whofollowed technical rules in the manner of the archetypical Dickensian clerk or Weberian bureaucrat. Within the profession and amongst those with close ties to the profession, there was keen awareness of crucial shifts that began in the1970s. The wall that had once separated auditors from the firms theywere monitoring had begun to crumble. Increasingly, personnel circulated between accounting firms and well- heeled client firms. Accounting firms set up consulting branches that worked with client firms; over time EFTA00226816
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the amount of consulting business often equaled or even surpassed that dedicated to the monitoring of the books. In the go-go financial milieu of the 1980s and 1990s, as documented in our Good Work Project and many other sources, markets became increasingly dominant in many spheres of life. Indeed, at the end of the 1990s,1 made a quip that turned out to be uncannily prophetic: "If markets come to control everything, in the end there will be only one profession--accounting. And that is because only the auditors will be able to tell us whether the books are on the level or have been cooked." But like most of the public, I was unprepared for the huge accounting scandals that captured the headlines at the start of the twenty-first century. Led by the renowned firm Arthur Andersen, all the majorfirms were shown to have abandoned their professional disinterestedness (or 'independence,' as it is referred to in the profession) in flagrant ways. It was no longer unusual for accountants to hold stock in, work for, or consult for the firms they were allegedly monitoring;and for their part, firms went out of their way to provide lucrativework and extra perks for the supposedly independent auditors. The smoking gun was the relationship between energy giant Enron and the flagship professional services firm of Arthur Andersen. These rums met powerful sanctions: bankruptcy with possible jail terms for those high-level managers whose involvement crossed the line from compromised to frankly bad work. At the time of this writing, other major accounting firms like Ernst and Young and PricewaterhouseCoopers have also had to pay significant penalties; punitive new regulations and legislation have been put into place; and many other business firms--established ones like General Electric and Xerox, newer ones like Tyco, WorldCom, and Global Crossing--have undergone probes or have even dissolved. Mean-while, the tacit or demonstrable complicity of members of boards of directors has been amply documented, and the domain of accounting as a whole lies very much under suspicion, its standingas a profession open to strong challenge. The core value of the profession of public accounting is captured in the descriptor public.' Accountants receive training, licenses, and status commensurate thereto on the assumption that they will represent the public's interest in their review of the financial practicesof individuals or corporations. Should the books appear questionablein any way, it is the duty of the public accountant to raise questions to the responsible individual or corporation, and, if necessary, to refuse to certify that the accounts conform to generally accepted accounting principles. Whether one thinks of journalism, law, or accounting, it is tempting to posit a golden age--a time when professionals were professionals, and the vast majority exemplified the highest values of the domain. But the mixed reputation of lawyers and journalists over the decades reveals the superficiality of such an analysis. And when one examines the history of accounting in the United States in the twentieth century, one also discovers an oscillation between periods when auditors were under suspicion for questionable practices, and periods when corrective measures were installed and the prestige of the profession was restored. Indeed, such a swing of the pendulum can be seen in thehistory of Arthur Andersen. At the start of the twentieth century, like other accounting firms, Andersen carried out non-audit services. By the 1960s, it was possible to become an Andersen consultant without having worked as an auditor for the two prior years; and in 1973, a separate consulting arm of the firm had been set up. In the late 1970s, CEO Harvey Kapnick tried unsuccessfully to split the time into two separate entities and was pressured to resign thereafter. During the 1980s, the consulting arm of the firm became increasingly powerful, and the lines between consulting and auditing blurred. By the late 1980s, the tension between the accounting and consulting anus was so acute that the two parts ofthe firm were in constant argument and occasionally in court. By 1999, Arthur Andersen had become the slowest growing of the Big Five accounting firms, and in 2000, the consulting arm, Accenture, finally became a wholly independent entity. As is now well known, Andersen had become the auditor for Enron. Widely touted as a model for a new kind of company for a new millennium, Enron trafficked in the selling of energy (especially gas) and energy futures. In 2000, it was, on paper, the seventh largest firm in the United States, with a book value of 100 billion dollars. In 2001, the Enron bubble burst when it became clear that much of the corporation's alleged size, activity, and profitability was in fact fraudulent, the result of imaginative advertising and improper accounting. Andwhen Arthur Andersen began to shred its Enron documents, the fate ofthe firm was sealed in the eyes of the media, the general public, and, eventually, the legal system. EFTA00226817
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Studies of the Andersen-Enron connection reveal that it had been deeply compromised for years. Enron was one of Andersen's largest clients; it paid a total of over fifty million dollars a year to Andersen's auditing, consulting, and tax divisions. Employees shuttled back and forth between the two companies with such ease and frequency that it was sometimes difficult to tell for which they were working; at least eighty former Andersen auditors were working for Enron. The supposed line between the company being audited and the auditors evaluating the books of that company had become so blurted that, in effect, itno longer existed. And yet it has proved difficult to demonstrate sheer illegality. This is both because the nature of Enron's business was so new and so convoluted, and because so much of the role of the auditor/accountant remains an issue of professional judgment rather than of sheer legality or illegality. In my view, the chief embodiment of compromised work in the accounting profession is the condition of wearing two hats--hats that inevitably pit key interests against one another. On the one hand, as representatives of the public, auditors and their umbrella organizations are supposed to remain at arm's length from the companies they monitor. On the other hand, the excitement and the monetary gains availablefor consulting prove irresistibly seductive for many auditors and their umbrella organizations. One cannot at the same time offer advice and feedback to companies while standing disinterestedly apart from their practices: in effect, one has become judge and litigant at the same time. In each of the cases discussed, the background history covered a much longer period than I had anticipated. Jayson Blair's case reflected larger-scale trends at the Times, dating back to the 1980s and exacerbated by the appointment of a new managerial regime in 2001: Hill and Barlow failed to recognize. let alone adapt to. forces that middle-sized law firms had been confronting for decades; and Arthur Andersen encountered longstanding tensions in the accounting profession regarding appropriate relations with clients. Nor are the cases restricted to the particular examples on which I happened to focus: Within journalism, similar scandals had occurred in recent years at The BostonGlobe, The Washington Post, USA Today, and The New Republic. Severaldozen major law firms in Boston and elsewhere had either closed downor were absorbed into larger and more profitable firms. In recent years, each of the Big Five accounting firms saw significant scandals; comparable 'multiple hats' problems arose in Europe and Asia: and compensatory legislation like the Sarbanes-Oxley Act caused turbulence in a great many American corporations. Whatever their usefulness for conceptualization and exposition, the three levels of analysis that I had selected turned out to be more closely related than I had expected. If the study of good work is in its early adolescence, then the examination of compromised work is in its infancy. Finn conclusions would be decidedly premature. And yet, given the importance of the problem, and its indissoluble links to issues of good work, a ■ summary comments are in order. Because persons and institutions can go bad for any number of reasons, isolated cases of compromised work cannot be prevented. What is susceptible to treatment is the soil in which compromised work is likely to arise and thrive. Our three cases and others that could have been treated suggest that superficial signs of alignment can in fact be the enemies of good work. Respected institutions like The New York Times, Hill and Barlow, and Arthur Andersen create in their members--and in the general public--the belief that these institutions are inherently good and above suspicion. Those assigned the job of surveillance internally or externally may become lax, and, accordingly, those who are tempted to practice compromised work may find an unexpectedlypromising breeding ground. (In writing about the Jayson Blair case in The New Yorker of June 30, 2003, Elizabeth Kolben said that this "paper of record" cannot afford to "check up" on its employees; it hasto assume they are trustworthy.) Indeed, these circumstances obtained in each of our three examples: layson Blair was on the make: Raines and Boyd wanted to remake the culture of the Times even at the cost of violating its most imponantvalues. And while various alarm bells tolled, none sounded loudly enough or insistently enough to be heard. Despite the enviable reputation of Hill and Barlow, many lawyers left the partnership starting in the 1980s; the particular requests of the real estate group were not taken seriously enough; and attempts to address the issue of financial survival and partnership communication were undertaken too late andwith too little sense of urgency. Arthur Andersen had actually resisted temptations to enter the consulting world. But when it finally succumbed, it entered with a vengeance--and despite warnings about conflicts of interest. Spokespersons for the firm continued to enunciate the fundamentals of accounting, but too many partners and workers were trying to wear two incompatible hats. When the ambivalent Andersen encountered the swashbuckling Enron, a disaster was in the making. EFTA00226818
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In each case, superficial features and blandishments obscured the central values of the domain. During the Blair-Raines period at the Times, scrupulous and fair reporting was sacrificed to the immediatelyaccessible and sexy. At Hill and Barlow, the norms of an effective partnership were undermined, as lawyers and entire departments went their own selfish way. And sometime in the last few decades, those responsible for the atmosphere of an accounting company forgot that it was supposed to be a public trust. Those on the inside should have seenthese problems and made loud noises, but efforts to right the culture were too weak and ineffective. And so in each case it took a dramatic event--Blait's plagiarism, the real estate department's exodus, the Enron meltdown--to reveal what should have been clearer to those onthe outside and clearest to those entrusted with preserving and embodying the values of the domain. What happens when such a critical point is reached? It is possible, of course, that the domain will continue to deteriorate, and may come to be replaced altoget er. Newspaper editor Harold Evans has quipped, "The problem many organizations face is not to sta in business but to stay in journalism" The i lawyer statesman no longer exists; it remains unclear whether he is being replaced by a viable option, or whether lawyers have just become high-priced free agents or cogs in a corporate legal machine. And if there are too many Enrons and Global Crossings, the Big Five will dwindle to Little Zero--and it is not clear whether the books will be monitored in the future by independent accountants, government officials, or private investigators. It is also possible that these professions will continue to survive but attract a different type of person with different kinds of values. With few exceptions, for example, broadcast television joumalismexists as entertainment rather than as news. Totalitarian countries have bookkeepers, but, as the old joke goes, they produce "whatever numbers you would like us to produce." And it is certainly possible tohave lawyer whores who sell their services to the highest bidder. Insuch cases, those who want to know what is really happening in the world, whether the books are really accurate, or whether they can get a fair trial, will no longer look to the members of the ascribed profession. One goal of the GoodWork Project is to help bring about a happier scenario. Professions will always feel pressures of one type or another, and, at the time of powerful market forces, these pressures can be decisive. The forces cannot be ignored; they must be dealt with--but they must not be succumbed to. Those individuals, institutions, andprofessions that actively cope with these forces while adhering to the central and irreplaceable values of the domain are most likely to survive and to thrive. How to do this? In our project, we speak of the four Ms that help to propagate good work (these were initially designed to address individuals, but they can be applied as well to institutions and even whole professions). The Ms seek answers to the following questions: Whatis the mission of our domain? What are the positive and negative models that we must keep in mind? When we look into the mirror as individual professionals, are we proud or embarrassed by what we see? And: When we hold up the mirror to our profession--or, indeed, our society--as a whole, are we proud or embarrassed by what we see? And, if thelatter, what arc we prepared to do about it? I suggest that if the individuals and institutions described here had perennially posed these questions and tried to answer them in a serious, transparent way, they would not have become targets for our study. Howard Gardner is John H. and Elisabeth A. Hobbs Professor of Cognition and Education at the Harvard Graduate School of Education. For the last decade, he has codirected the Good Work Project with Mihaly Csikszentmihalyi and William Damon. Gardner has been a Fellow of the American Academy since 1995. [cl 2005 by the American Academy of Arts & Sciences 1 I thank Jeffrey Epstein for his support of these investigations. 2 I thank Ryan Modri, Paula Marshall, and Deborah Freier for theirinvaluable research efforts. 3 Technically, Hill and Barlow became a corporation in 1992. LOAD-DATE: December 28, 2005 EFTA00226819
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270 of 1456 DOCUMENTS Copyright 2005 Telegraph Group Limited All Rights Reserved The Daily Telegraph (LONDON) November 29. 2005 SECTION: FEATURES; Science; Pg. 26 LENGTH: 1091 words HEADLINE: A DIY guide to saving Planet Earth Human survival depends on problem fixing not avoidance • in particular learning how to cool down our planet, says David Deutsch BYLINE: David Deutsch BODY: Let's start with a couple of ideas that everyone knows. The first - dramatically named Spaceship Earth - is that our planet is uniquely suited to us and our survival. The universe outside is implacably hostile; if we mess up our spaceship, we have nowhere else to go. The second is that, despite our traditional self-image, human beings are not the hub of existence: as Stephen Hawking famously put it, we're just a chemical scum on the surface of a typical planet in orbit around a typical star on the outskirts of a typical galaxy Everyone knows these things, yet they are both false. In fact, if you were looking for a pair of truths so important that it's worth carving them on blocks of stone and reciting them every morning before breakfast, you could do a lot worse than to carve denials of those two ideas Are we at a typical place? Most places in the universe are not on a planet, or even in a galaxy. Travel right outside the galaxy • say, 100,000 light years - and you still haven't reached a typical place. You will have to go about 1,000 times as far, into deep, intergalactic space, so remote that if the nearest star were to explode as a supernova, it would be too faint to see. It's also very cold, less than three degrees above absolute zero. And it's empty: less than one millionth the density of the highest vacuum that scientists can currently attain. That is how unlike Earth a typical location is. Yet the two are similar in one remarkable way. Take a telescope and gaze even further out than where we've just been, at a "quasaf. That was originally short for "quasi-stellar object", meaning "it looks like a star". But we now know what it really is. Billions of years ago, and billions of light years away, the centre of some galaxy collapsed towards a super- massive black hole. Intense magnetic fields directed some of the matter and gravitational energy of that collapse back out into intense jets, illuminating the surrounding gas with the brightness of a trillion suns. Billions of years later on the other side of the universe, a certain kind of chemical scum can accurately describe, model, predict and explain what those jets really are. One physical system, the human brain. contains an accurate working model of an utterly dissimilar one, a quasar. Not just a superficial image but an explanatory model embodying the same mathematical relationships and causal structure. That's knowledge. And if that weren't amazing enough, the faithfulness of this model is continually increasing. That's the growth of knowledge. So this chemical scum is different. It models, with ever-increasing precision, the structure of everything. Our planet, thanks to us, is a hub that contains within itself the structural and causal essence of the rest of physical reality. This doesn't require any special physics or miracle. Just matter and energy - and evidence, with which we chose between rival explanations of what is really out there. In intergalactic space, these three prerequisites are at their lowest ebb: it's empty, cold and dark. EFTA00226820
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But imagine a solar-system-sized cube of intergalactic space. That cube still contains a million tons of matter. Which is more than enough, say, to build a fusion-powered space station complete with scientists who might be collecting evidence to create an open-ended stream of knowledge, just like us - if the right knowledge were there to start it off. Therefore we are not in a uniquely hospitable place either. If intergalactic space is capable of creating an open-ended stream of explanations, then so is almost anywhere. And the limiting factor, both there and here, is not physical resources but knowledge. The Astronomer Royal, Sir Martin Rees, has written a book about our vulnerability to scientific accidents, terrorism using weapons of mass destruction and other dangers: he thinks civilisation has only a 50 per cent chance of surviving this century. But I believe our survival depends not on chance but on whether we can create the relevant knowledge in time. It always has depended on that, and always will. The vast majority of all species and all civilisations that have ever existed are now extinct. If we want to be the exception, our only hope is to harness the one feature that distinguishes our species and our civilisation from all others, namely our special relationship with the laws of physics: our ability to create new knowledge. Take global warming. According to the best available scientific theories, it is too late to avoid a global- warming disaster. For if it's true that our best option is to suppress carbon-dioxide emissions with the Kyoto protocol at a cost of hundreds of billions of pounds, then that's already a disaster by any reasonable measure. And those measures aren't even purported to solve the problem, merely to postpone it a little. Most likely it was already too late before anyone even knew about it: in the 1970s, the best available science was telling us that industrial emissions were about to precipitate a new Ice Age that would kill billions. The lesson seems so clear that I am baffled that it does not inform public debate: it is that we cannot always know. No precautions, and no precautionary principle, can avoid problems that we do not yet foresee. Therefore, societi needs to shift its stance from problem avoidance to problem fixing. world is abuzz with plans to cut emissions at all costs. It ought to be buzzing with plans to cool the planet. Or to thrive on a warmer one. And not at all costs, but efficiently. Some such plans exist: swarms of mirrors in space that would deflect sunlight away from the Earth; encouraging aquatic organisms to eat more carbon dioxide, and so on. Such problem-fixing ideas, currently mere fringe research, ought to be at the heart of humankind's approach to an unknowable and dangerous future. The ability to put things right, not the impossible prescience needed to stave off all harm in advance, is our only hope of survival. So take those two stone tablets and carve the two denials I spoke of. On the first, carve: problems are inevitable. And on the second: problems are soluble. David Deutsch is a professor of physics at Oxford University. This month he won the 5100,000 "Edge of Computation" prize, funded by the philanthropist Jeffrey Epstein, for his work on quantum computers. When he first proposed quantum computation in 1985, it seemed only a theoretical possibility. But the past decade has seen simple quantum computers that many believe will pave the way to a scientific revolution. LOAD-DATE: November 29, 2005 EFTA00226821
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233 of 1456 DOCUMENTS Copyright 2006 Associated Press All Rights Reserved The Associated Press State & Local Wire March 17, 2006 Friday 11:52 PM GMT SECTION: INTERNATIONAL NEWS LENGTH: 1513 words II EADLINE: A package of news briefs from the Caribbean BYLINE: By The Associated Press BODY: CARIBBEAN: Sugar producers in final push to get more EU aid GEORGETOWN, Guyana (AP) The Caribbean will send another team to several European capitals in a final push to get more aid for the region's sugar industry after large subsidy cuts were imposed in January•, an official said Friday. Representatives from the African, Caribbean and Pacific trade group head to Europe in April, following a first group that went in early March seeking extra funds to deal with the EU's 36-percent cut in sugar subsidies. The EU for years gave its former colonies in the Caribbean. Africa and the Pacific preferential access to its markets and paid high pnces to encourage development. The World Trade Organization said the regime was unfair and ordered the bloc to reduce quotas and prices for sugar, as well as for bananas and cotton. The EU has earmarked USS47 million ([#x20ac)40 million) in aid for the I8 sugar producing ACP countries in 2006. Caribbean sugar producers argue the reduced compensation is unfair because EU farmers who face the same subsidy cuts were to be compensated US$7.9 billion ([#x20ac)6.5 billion). Caribbean sugar producers include Guyana. Jamaica, Belize, Trinidad and Barbados. St. Kitts closed its industry after the cuts were first announced and because of rising production costs. ST. VINCENT: St. Vincent police find bullet that killed PM's press secretary KINGSTOWN, St. Vincent (AP) St. Vincent police have recovered the single bullet that killed the prime ministers press secretary and have sent it to another Caribbean island for analysis. an official said Friday. The bullet was found imbedded in a seat in Glen Jackson's sport utility vehicle, said Bertram Pompey. acting police commissioner, who declined to specify where the bullet was sent for testing. Jackson, whose nude body was discovered Feb. 6 in the SUV near his home in the Cane Garden area outside the capital, was Prime Minister Ralph Gonsalves' press secretary. He played major roles in the governing Unity Labor Party's successful 2001 and 2005 elections campaigns and hosted a radio talk show program. Gonsalves has said two Scotland Yard specialists were expected to join three British investigators working with local authorities to investigate Jackson's death. Thousands of people turned out Wednesday for his funeral. About 118,000 people live in St. Vincent and the Grenadines, an island chain in the southeast Caribbean Sea. EFTA00226822
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JAMAICA: Jamaican man charged with killing six family members KINGSTON, Jamaica (AP) A man has been charged with killing six family members, including four children, whose bodies were found along a beach in western Jamaica last month, police said Friday. Michael McLean, 38, was charged Thursday with six counts of murder, police said. McLean, the common-law husband of one of the victims, Terry-Anne Mohammed, 42, has been in custody since Feb. 28. He turned himself into police because he said he feared for his life after neighbors accused him of the murders. Mohammed's burnt corpse was found by police about a half-mile a the mutilated body of her 8-year-old son, Jessie Ogilvie. The bodies of Mohammed's niece, Farika McCool, 27, and two of her children were also found on the beach with their throats slashed. One week later, police say McLean led them to a nearby parish where George-McCool's 6-year-old daughter, Jhaid, was buried in a shallow grave. The slayings may be drug-related, said Arthur Martin, assistant commissioner of police. There were a record 1,669 homicides last year in Jamaica, which has recently received the help of Scotland Yard and London's Metropolitan Police to fight the crime wave. HAITI: New U.S. ambassador arrives, takes up post PORT-AU-PRINCE, Haiti (AP) The United States will provide support to Haiti and work with the country's recently elected government, the new U.S. ambassador said Friday. Janet A. Sanderson, former ambassador to Algeria, also has served at diplomatic missions in Egypt, Jordan, Israel, Kuwait and Bangladesh. "With the election of a new president, new perspectives now present themselves to Haiti," she said while presenting her credentials to the Haitian government. "Haitians are looking for a better life. And they are ready though impatient to work ardently to succeed." President W. Bush nominated the career diplomat to replace James Foley, who left Haiti late last year. The United States is one of the main donors to Haiti, the poorest country in the Western Hemisphere. GUYANA: U.S. diplomat lambasts drug trade, tells police to stop fraternizing with criminals GEORGETOWN, Guyana (AP) The drug trade is fueling a surge in violent crime and corruption in Guyana, and police must stop fraternizing with known drug traffickers, a U.S. official said Friday. The drug trade has grown from a trickle to a multimillion dollar business in the South American country, and communities are small enough for everyone to know who is involved in it, said Michael Thomas, the U.S. embassy's deputy chief of mission. "The public will not trust a police officer they see having lunch with a drug trafficker," said Thomas, who spoke at the end of an FBI-sponsored community policing training course. Drug trafficking accounts for an estimated 20 percent of the country's gross domestic product, the U.S. State Department said in its annual narcotics report released last week. Local media regularly report crimes that are believed to be related to drugs, the report said. Weak law enforcement has contributed to the problem, and U.S. federal agents believe anti-drugs agencies intercept a small amount of the cocaine that transits Guyana, the report said. PUERTO RICO: U.S. contractor gets 10-year sentence in education fraud case SAN JUAN, Puerto Rico (AP) A U.S. contractor was sentenced Friday to 10 years in prison for his role in a USS4.3 million ((gx20ac)3.6 million) fraud scandal involving Puerto Rico's education department and its former chief. EFTA00226823
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Norman Olson was convicted of four counts of bribery for paying more than USS73,000 (11/x2Oac)60,400) in political favors as pan of a scheme uncovered four years ago. Olson, president and owner of National School Services, a Chicago-based business that provides teacher training and education consultants, said he plans to appeal. "I respect the decision of this court even though I feel that I am innocent of these charges," Olson said following his sentencing. Olson was found guilty of paying bribes to Victor Fajardo, former education secretary from 1994 to 2000, in exchange for contracts with the department between 1999 and 2000. Fajardo pleaded guilty in 2002 to extorting some USS4.3 million from contractors doing business with his agency. U.S. VIRGIN ISLANDS: Nobel Prize winning physicists debate universe structure in U.S. Virgin Islands CHARLOTTE AMALIE, U.S. Virgin Islands (AP) Twenty of the worlds top physicists, including three Nobel Prize winners, are meeting in the U.S. Virgin Islands to debate the structure of the universe. Nobel prize winners Gerardus 't Hooft, David Gross and Frank Wilczek, and experimental and theoretical physics pioneer Stephen Hawking are among the minds that have converged in the island of St. Thomas to discuss some of physics most puzzling questions, such as the existence of black holes and alternate dimensions. "This is a remarkable group, as far as the level of people who are here," said Wilczek, who won the 2004 Nobel Prize in physics with Gross and H. David Politzer for their explanation of the force that binds particles inside the atomic nucleus. Jeffrey Epstein, a New York money manager whose J. Epstein Virgin Islands Foundation helped finance the six-day conference that began Thursday night, said the U.S. Caribbean territory's natural beauty will help the scientists relax and concentrate. "You work best with friends. The idea is to take them for a walk on the beach. Take them on a submarine ride," he said. "I think some really great ideas will come out of this." CRICKET: Solanki spurs England A to series-leveling win BRIDGETOWN, Barbados (AP) Captain Vikram Solanki spanked 92 as England A cruised to a series- leveling 90-run triumph over West Indies A in their fourth one-day cricket international at Windward Cricket Club on Friday. The five-match rubber stood at 2-2 with the decider on Sunday at the same venue. Solanki, the Worcestershire right-hander, cracked nine fours off 121 balls to lead the visitors to a formidable 269 for nine off 50 oven. The home team limped to 179-9 off 50 oven in its pursuit. England fast bowler Sajid Mahmood engineered a top-order slide, claiming three for 33 while offspinner Gareth Batty took 3.26. Left-hander Ryan Hinds topscored for West Indies with a labored 32 off 70 balls. England A, batting first after winning the toss, stumbled early on as West Indies' new ball pair of Andrew Richardson and Tino Best reduced it to 15-2 in the fifth over. But Solanki and Jamie Dalrymple added 132 for the third wicket to till the balance back to their side. Dalrymple cracked four fours and three sixes in 62 off 75 balls before he was stumped trying to hit out at offspinner Omani Banks. LOAD-DATE: March 18, 2006 EFTA00226824
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461 of 1456 DOCUMENTS Copyright 2004 SOFTLINE INFORMATION, INC. Ethnic NewsWatch Forward April 23, 2004 SECTION: Vol. CVII: No. 31; Pg. 6 SLI.ACC-NO: 0604FWDM 104 000012 LENGTH: 936 words HEADLINE: Fund Helps Persecuted Scholars Reach Safe Havens BYLINE: Popper. Nathaniel BODY: In a seemingly different life, Ahmed Subhy Mansour was a scholar at Cairo's venerated Al-Azhar University. He studied the history of dictatorship in Islam and the place of death and paradise in the Koran. But some aspect of his research did not go over well with the authorities, and in 1987 he was fired from his position and jailed for two months. Since then he has searched for a place to continue his work and his life, particularly after a number of newspapers accused hint of upholding Zionism, a crime punishable by death in Egypt. After 15 years of wandering, last year he finally found a new home -- as a research fellow at Harvard University. The match was made through the Scholar Rescue Fund, started two years ago by the Institute of International Education. Since it was created, the rescue fund has enabled Mansour and 44 other scholars to escape persecution in their home countries, and -- just as importantly for many of them -- to continue their scholarly work with a position at an American university. At Harvard, for example. Mansour has pushed ahead with the creation of a center for studying and reforming the Wahabi influence on Islamic institutions in America. The rescue fund is not the first such project run by the International Institute of Education, which also sponsors the Fulbright scholarship program. During the 1930s and 1940s. the institute's Emergency Committee in Aid of Displaced Foreign Scholars helped bring more than 330 scholars, most of them Jewish, from Nazi Germany to the United States, including such luminaries as philosopher Martin Buber, physicist Enrico Fermi and novelist Thomas Mann. Descendents of several of those earlier scholars, along with families of other Jewish refugees, gathered recently at the Park Avenue apartment of Jewish philanthropist Patti Kenner to raise money to help revive the rescue program. After cocktails, the crowd of about 100 guests retired to Kennees warm living room to sit on plush couches among pastoral landscape paintings. Four recently rescued scholars had been brought in for the evening, and two of them told their respective tales of persecution in Iran and Pakistan, which seemed much more than a world away from the safety of the Upper East Side. "I've had such an easy life," Kenner said after hearing the scholars speak, with a tone of gratitude that was representative of her guests. "I've never experienced anything difficult. We're all so lucky." EFTA00226825
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The fund is being revived at a time when many observers are talking about global antisemitism reaching its highest levels since the 1930s, when the last rescue program was in operation. In the program's =rent incarnation, though, none of the 45 scholars who have been rescued are Jewish. The one scholar so far whose work was connected to the Jewish community was a Palestinian scholar, who felt threatened by both Israeli and Palestinian officials for his work analyzing the policy of political assassinations. "He was advocating less violence on both sides, and it made him unpopular with a lot of people." according to Robert Quinn, director of the Scholar Rescue Fund. The rescue fund has little in the way of guaranteed funds to ensure its survival. The goal of the night was to raise I million for an endowed chair in the name of Ruth Gruber, a 93-year old photojournalist who was on hand to tell of her trip to Europe in 1944, when she helped rescue 1.000 Jewish refugees. The Gruber chair is part of a larger effort to create a 10 million endowment that is being lefisefugee-turned-millionaire Henry 'mad, along with fellow businessmen Soros, Thomas Russo and Jeffrey Epstein. While the roster of scholars who have been helped suggests that the Jewish funding for the program does not come out of a narrow ethnic self-interest, the scars of Jewish history were evident beneath the surface of the appeals for donations at Kenner's apartment. The guest speaker for the night was Hanna Holborn Gray, who came over with her parents through the 1930s rescue program and went on to become the first female president of the University of Chicago. "In the 1930s, the German academic world was seen as a model, and one saw how quickly that could vanish," Gray recalled. Almost all of the 45 scholars funded in the last two years have hailed from either African or Muslim-majority countries. Many of them -- including Mansour and an Iranian scientist who spoke at Kenner's home -- have been punished for the pro-Western and pro-Israel slant in their work The hind's directors, however, have been astonished at the diversity of the 450 scholars from 84 countries who have applied so far. Many of the applicants come from far beyond the traditional disciplines of the humanities in which dissidents might be expected to work. The threat of bodily harm was a constant for most of the applicants, and Jarecki ominously remembered that many of the more than 5000 applicants who were turned down by the institute during the 1930s perished a few years later. A scholar from the Ivory Coast at Kenner's gathering described his own situation -- being forced to hide in the countryside after teaching political science courses that were critical of the government as a re-emergence of darker periods from the past. "This is the same old story," the African scholar said. "It is the history of the universe. The history of power corrupting people." Article copyright Forward Newspaper, L.L.C. JOURNAL-CODE: FW LOAD-DATE: September 30, 2004 EFTA00226826
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math-•counting attitude--positive 10 9 66.6 60.0 speech act 9 60.0 space--size 8 53.3 space--grasping 7 46.6 sound--speech 7 46.6 logic-•universal 7 46.6 quantification space--housing 6 40.0 Table 2 Diverse schemes for story understanding domains Domain Representation/Reasoning Schemes space frame, generalized cylinder model, interval logic, occupancy grid time, action effects causal model, event calculus, situation calculus, transframe reactivity neural net, production system, subsumption architecture schemas, scripts finite automaton, frame, frame- Aray, generalized Petri net subgoaling first-order logic, K-line, marker passing, semantic net emotions, attitudes microneme. neural net, temporal modal logic ** Trademark or registered trademark of Cycorp, Inc. Cited references and notes (1.) M. Minsky, The Emotion Machine, Pantheon. New York (forthcoming). Several chapters are on line at http://web.media.mit.eduf minsky. (2.) The use of reading comprehension tests as a metric for evaluating story understanding systems was previously proposed in L. Hirschman, M. Light, E. Brcck, and J. Burger, "Deep Read: A Reading Comprehension System," Proceedings of the 37th Annual Meeting of the Association for Computational Linguistics, College Park, MD, June 1999, Association for Computational Linguistics (1999). (3.)1. McCarthy, "Programs with Common Sense," Proceedings of the Symposium on Mechanisation of Thought Processes, Her Majesty's Stationery Office, London (1958), pp. 77-84. EFTA00226827
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(4.) J. McCarthy, "From Here to Human-Level Intelligence," Proceedings of the Fifth International Conference on Principles of Knowledge Representation and Reasoning (KR'96), Cambridge, MA, November 1996, Morgan Kaufmann, San Mateo, CA (1996), pp. 640-646. (5.) L. Morgenstern, "A Formal Theory of Multiple Agent Non-monotonic Reasoning," Proceedings of the Eighth National Conference on Artificial Intelligence, AAAI Press, Menlo Park, CA (1990), pp. 538- 544. (6.) E. M, "The Naive Physics Perplex," Al Magazine 19, No. 4, 51-79 (1998). (7.) D. Lenat, "Cyc: A Large-Scale Investment in Knowledge Infrastructure," Communications of the ACM 38, No. 11, 32.38 (1995). (8.) More details can be found in E. T. Mueller, "Story Understanding," to appear in Encyclopedia of Cognitive Science, Nature Publishing Group, London (2002). (9.) E. Charniak, Toward a Model of Children's Story Comprehension, Technical Report AITR-266, Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, MA (1972). (10.) R. C. Schank and R. P. Abelson, Scripts, Plans, Goals, and Understanding, L. Erlbaum Associates, Hillsdale, NJ (1977). (II.) R. E. Cullingford, Script Application: Computer Understanding of Newspaper Stories, Technical Report YALE/DCS/tr116, Computer Science Department, Yale University, New Haven, CT (1978). (12.) R. Wilensky, Understanding Goal-Based Stories, Technical Report YALEIDCSAr140, Computer Science Department, Yale University, New Haven, CT (1978). (13.) M.G. Dyer, In-Depth Understanding, MIT Press, Cambridge, MA (1983). (14.) A. Ram, Question-Driven Understanding: An Integrated Theory of Story Understanding, Memory, and Learning, Technical Report YALE/DCSitr710, Computer Science Department, Yale University, New Haven, CT (1989). (15.) C. Dolan, Tensor Manipulation Networks: Connectionist and Symbolic Approaches to Comprehension, Learning, and Planning, Technical Report 890030, Computer Science Department, University of California, Los Angeles, CA (1989). (16.) E.T. Mueller, Natural Language Processing with ThoughtTreasure, Signiform, New York (1998), full text of book available on line at http://wvAv.signiform.comitt/booW. (17.) L. G. Alexander, Longman English Grammar, Longman, London (1988). (18.) E. M, Representations of Commonsense Knowledge, Morgan Kauffman, San Mateo, CA (1990). (19.) S. E. Fahlman, NEIL: A System for Repretenting and Using Real-World Knowledge, MIT Press, Cambridge, MA (1979). (20.) M. Shanahan, Solving the Frame Problem, MIT Press, Cambridge, MA (1997). (21.) D.A. Randell, Z. Cui, and A. G. Cohn, "A Spatial Logic Based on Regions and Connection," Proceedings of the Third International Conference on Knowledge Representation and Reasoning, Morgan Kaufmann, San Mateo, CA (1992), pp. 165.176. (22.) B. Kuipers, "The Spatial Semantic Hierarchy," Artificial Intelligence 119, 191-233 (2000). (23.) P. Singh, "The Public Acquisition of Commonsense Knowledge," Proceedings of the AAAI Spring Symposium on Acquiring (and Using) Linguistic (and World) Knowledge for Information Access, Palo Alto, CA, March 2002, American Association for Artificial Intelligence (2002). (24.) M. Minsky, The Society of Mind, Simon & Schuster, New York (1985). (25.) A. Sloman, "Beyond Shallow Models of Emotion," Cognitive Processing I, No. 1 (2001). EFTA00226828
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•I • The reactive and deliberative layers differ in that the deliberative layer evolved much later and requires a far more sophisticated long-term memory, as well as symbolic reasoning capabilities using a short-term reusable memory. The meta-management layer may have evolved at a still later time and requires explicit use of concepts referring to states of an information processing architecture. The earliest organisms, such as most existing organisms. were totally reactive. Deliberative and meta-management layers evolved later. Adult humans appear to have all three types of processing, which is probably rare among other animals. One of the key features that gives H-Cogaff its generality is the fact that different components, instead of forming parts of simple pipelines, can concurrently send information of various kinds to arbitrarily many other components, allowing a wide varlet' of feedback mechanisms and triggering mechanisms. In story understanding, the meta-management level may control the deliberative level in a number of ways. • If the deliberative level is spending too much time considering certain details and those details are not crucial to the story, the meta-management level will make the deliberative level stop. • If the deliberative level is spending too much time on a task that does not relate to the goal of reading the story, the meta-management level will make the deliberative level stop. • If the deliberative level becomes confused, the meta-management level will tell it to go back and reread. The deliberative level may have ruled out a possibility earlier that needs to be reconsidered in light of new information. Minsky further elaborates the H-Cogaff architecture into the six-level architecture called "Model Six" shown in Figure 2. (I) At its bottom lies a "zoo of instinctive subanimals" built upon ancient, ancestral systems that still maintain our bodies and brains. These include systems for feeding, breathing, heating, sleeping, and other systems that keep us alive. The deliberative and reflective levels are engaged to solve more difficult kinds of problems. The self-reflective level is engaged when the problems involve our relationships with our past and future selves. At the top lies machinery that we acquire from our societies. such as suppressors and censors, imprimers and values, and our various kinds of self-ideals. [FIGURE 2 OMITTED) Multiple reasoning and representation schemes and levels. An architecture of diversity would embed representations from natural language to micronemes (27,1) as depicted in Figure 3. The representations depicted include frames, transframes, frame-arrays, K-lines, and micronemes. A frame is a representation based on a set of slots to which other structures can be attached. (28) Each slot is connected to a default assumption that is easily displaced by more specific information. A transfrarne is a particular type of frame representing the causal trajectory between the initial and resulting states representing a situation that a legal action was performed on. A frame-array is a collection of frames that share the same slots, making it easy to change perspective with respect to physical viewpoint or other mental realms. A knowledge-line or K- line is a wirelike structure that attaches itself to whichever resources are active in solving a problem. The K-line simplifies activation of those same resources when solving a similar problem in the future. Micronemes arc low-level features for representing the many cognitive shades and hues of a context. In Figure 3, new evolved structures are made from older lower-level ones, and the tower shown might be a plausible Darwinian brain-development scheme. [FIGURE 3 OMITTED] Table 2 shows just a few of the diverse representation and reasoning schemes useful for domains of story understanding. We propose to address the commonsense reasoning problem starting with stories for very young readers. However, to demonstrate all of the different ways we think when understanding a story. and what we would eventually expect a commonsense story understanding system to be able to handle, consider the following adult story (the discussion here is condensed from Reference I). Joan heard a ring and picked up the phone. Charles was answering her question about how to use a certain technique. He suggested she read a EFTA00226829
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certain book, which he would soon bring to her since he had planned to be in her neighborhood. Joan thanked him and ended the call. Soon Charles arrived and gave her the book. Following are a few of the understandings an adult reader would have after hearing the story. • Joan heard a ring. She recognizes it as a telephone bell and feels the need to respond quickly. She knows how to use the telephone. • She picked up the phone. She is subsequently holding the phone to her car. • Charles was answering her question. Charles and Joan are not in the same room. Charles also knows how to use the telephone. • He suggested she read a certain book. Joan probably now feels some relief, since she knows where to find the knowledge she needs. • He had planned to be in her neighborhood. Joan will not be surprised when he arrives, because she will remember that he said he would come. • Ile gave her the book. Will she have to give it back? The story does not tell us that. These conclusions are based on reasoning and representations in many realms, as follow. The physical realm. In this realm, give might mean the motion of the book through space. This could be represented as a transframe that starts with Charles's hand holding the book and ends with Joan's hand carrying it. One must know a lot about physical things and how they behave in space and time. The social realm. In this realm, give may signify social acts that can alter the relationships of the actors. What were Charles's motives or his attitudes? Clearly, he was not returning a loan. Was he hoping to ingratiate himself? Or was he just being generous? How will Joan feel about Charles after he gives her the book? One must know a lot about what people arc, and a certain amount about how people work. The dominion realm. Given Charles gave Joan the book, one infers not only that Joan is holding the book, but also that, at least for a time, she possesses the right to use it. The conversational realm. How do conversations work? Consider how many elaborate skills are involved in a typical verbal exchange. One has to keep track of what is being discussed, what one has previously told the listener, and what the listener knows. Thus conversations are partly based on knowledge of how human memories work and what is commonly known in one's culture. One has to make sure the listener has understood what was said and why it was said. One certainly needs to know how to speak and to understand some of what one may hear. The procedural realm. How does one make a telephone call? One must first find a phone and dial a number. Then once the connection has been established, one says hello, talks a bit, and eventually leads into why one called. At the end, one says goodbye and hangs up the phone. Generally, such scripts have certain steps that are specified, while other steps provide for more room to improvise. The sensory and motor realms. Each of the above steps raises questions. For example, it takes only one second or so for one's arm to reach out in order to pick up the phone. How can one do that so quickly? The kinesthetic, tactile, and haptic realms. Using a telephone or any other physical object engages a great base of body-related knowledge and skills. One anticipates how the phone will feel against one's ear or sandwiched between shoulder and cheek. One expects certain haptic sensations such as the feel of the phone's weight. One strengthens one's grip when the phone starts to slip. The temporal realms. People have elaborate models of time where events are located in futures and pasts that are represented in relation to other times and events or in anecdotal stories. The economic realm. People know and reason about the costs incurred by each action or transaction in terms of money, energy, space, or time. EFTA00226830
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The reflective realm. People know about themselves. One knows to some degree what one can or cannot do, what kinds of problems one can solve, how one's thinking and memory works, and what sorts of things one is able to learn. .Along with these positive kinds of knowledge, one also has negative knowledge about what might go wrong when using a phone. One must know what to do if one gets a wrong number, if there is no answer, or if a modem or intercept recording is reached. Example system with architecture of diversity. Thus far, the Sloman and Minsky architectures arc theoretical constructs and have not yet been implemented. However, there are examples of working systems that capture the spirit of such architectures. One such example is the NI system depicted in Figure 4. (29) M integrates multiple reasoning processes and representations to serve as an assistant to a user collaborating with other workers within a virtual meeting room that hosts multimedia desktop conferencing. NI serves to recognize and classify the actions performed by the participants as well as the objects upon which the actions arc applied; example actions and objects are brainstorming on a whiteboard, coauthoring a document, and creating and working with other artifacts. [FIGURE 4 OMITTED] Next steps The two recent meetings held in March 2002 at the IBM Thomas J. Watson Research Center and in April 2002 on St. Thomas indicate that there is a dedicated group of recognized researchers interested in working together on a project to develop a solution to commonsense reasoning. We are now planning to undertake some of the next steps in a plan for such a project. The inspiration for this work comes from Minsky's past and forthcoming work. We close with his thoughts on how such a project might be realized, as follows. Our goal is to aim toward a critical "change of phase" that will come when we cross a threshold at which our systems know how to improve themselves. This is something that all young children can do, but we do not know enough about how they do it; so one goal of the project must be to develop better models of how normal people think. We will start by trying to implement some of the architectures proposed over the past decade. There already exist many useful schemes for representing and using knowledge mostly of a factual nature for use on what we call the deliberative level. However, there has not been enough work on the higher reflective and self-reflective levels that humans use, as they learn to improve their thinking itself. Any such system, we claim, will need additional kinds of meta-resources, which will include systems that manage, criticize, and modify the already operating parts of the structure. In the field of AI we already have many resources related to this, for example, neural networks, formal logic, relational databases, genetic programs, statistical methods, and of course the heuristic search, planning, and case-based reasoning schemes of earlier years. However, our goal is not to discuss which method is best. Instead we will try to develop a plan of how to incorporate into one system the virtues of many different approaches. Of course, each such scheme has deficiencies and our hope is that our system can escape from these by using higher-level, more reflective schemes that understand what each of those other schemes can do and in what context they are most effective. Table I Early reader corpus: top 10 domains of common sense Domain Number Percentage of Stories of Stories space--location 14 93.3 space--motion It 733 EFTA00226831
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606 of 1456 DOCUMENTS Copyright 2002 Gale Group, Inc. ASAP Copyright 2002 All Rights Reserved. IBM Systems Journal September 1, 2002 SECTION: No. 3, Vol. 41; Pg. 530; ISSN: 0018-8670 IAC-ACC-NO: 91469723 LENGTH: 6160 words HEADLINE: An architecture of diversity for commonsense reasoning; Technical forum. BYLINE: McCarthy, J.; Minsky, M.; Sloman, A.; Gong, L.; Lau, T.; Morgenstern, L.; Mueller, E.T.; Riecken, D.; Singh, M.; Singh, P. BODY: Although computers excel at certain bounded tasks that are difficult for humans, such as solving integrals, they have difficulty performing commonsense tasks that are easy for humans, such as understanding stories. In this Technical Forum contribution, we discuss commonsense reasoning and what makes it difficult for computers. We contend that commonsense reasoning is too hard a problem to solve using any single artificial intelligence technique. We propose a multilevel architecture consisting of diverse reasoning and representation techniques that collaborate and reflect in order to allow the best techniques to be used for the many situations that arise in commonsense reasoning. We present story understanding-- specifically, understanding and answering questions about progressively harder children's texts--as a task for evaluating and scaling up a commonsense reasoning system. In the fall of 2001, a proposal was developed by Marvin Minsky, Erik Mueller, Doug Riecken, Push Singh, Aaron Sloman, and Oliver Steele for a project to develop a human-level commonsense reasoning system. The basic proposal was (1) to develop certain ideas of Minsky and Sloman about a multilevel cognitive architecture, and (2) to develop the system in a way that would exploit many existing artificial intelligence techniques for commonsense reasoning and knowledge representation, such as case-based reasoning, logic, neural nets, genetic algorithms, and heuristic search. We proposed to organize a meeting at which we would bring together many of the major established researchers in the area of commonsense knowledge and reasoning. Riecken organized a preliminary meeting at the IBM Thomas J. Watson Research Center in March 2002, at which many IBM researchers were invited to discuss and react to this general subject as well as to present their own ideas. Afterwards, the specific proposal was discussed in more detail by specialists in commonsense knowledge and reasoning at a meeting held on St. Thomas, Virgin Islands, in April 2002, and hosted by Jeffrey Epstein. This Technical Forum contribution focuses on the preliminary meeting, but also contains some material presented at the April meeting, including some material from Minsky's forthcoming book The Emotion Machine. (I) At the IBM meeting, a broad consensus was reached on three main points. First, there was agreement that the community should strive toward solving a nontrivial problem that would require a level of knowledge, and a capability of reasoning with that knowledge, beyond what is demonstrated by current systems. The problem put forward was that of story understanding. An important advantage of the story understanding task is that standardized tests are available to evaluate students on their reading comprehension skills. Moreover, these tests require the use of commonsense reasoning skills. It is thus possible to evaluate the performance of any story understanding system against that of students at different reading levels. (2) EFTA00226832
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Second, there was consensus that the story understanding task provides a strong testbed for evaluating a commonsense reasoning system. Not only dots such a system need several different forms of reasoning, representation, and learning, but it also needs them to work in conjunction with each other. In addition, the task highlights the importance of using and reasoning with common sense. This is illustrated by a sentence from a story about a child and her grandfather: "He gently takes my elbow as we walk so that I can help show him the path." Knowledge of the fact that the grandfather is blind, and the commonsense facts that people ordinarily use their sight to find paths and that blind people are unable to see, enable the inference that the child is guiding the grandfather and not merely pointing out the path, another frequent sense of the word "show." Absence of this commonsense knowledge could lead to the incorrect interpretation of the word "show." Third, there was agreement on the need to develop a testbed architecture for representation and reasoning that allows different systems and representations to work with each other. Researchers often try to solve a problem using just one form of representation and reasoning. But such an approach does not work well for sufficiently complex problems such as story understanding. In contrast, enabling various techniques to collaborate will allow the best techniques to be used for a given situation. Any such architecture must provide metalevel control and knowledge that will enable different techniques to determine whether or not they are suited for a given task, to decide what other techniques may be better for the task, and to communicate information and share partial results with each other. What makes commonsense reasoning difficult Commonsense reasoning--the sort of reasoning we would expect a child to do easily--is difficult for computers to do. Certainly, the relative paucity of results in this field does not reflect the considerable effort that has been expended, starting with McCarthy's paper "Programs with Common Sense." (3) Nevertheless, the problem remains unsolved. What is it about commonsense reasoning that makes it difficult to automate? Various explanations have been suggested, some of which we discuss in this section. McCanhys commonsense informatic situation. The knowledge needed to solve a commonsense reasoning problem is typically much more extensive and general than the knowledge needed to solve difficult problems. McCarthy points out that the knowledge needed to solve well-formulated problems in fields such as physics or mathematics is bounded. (4) In contrast, there are no a priori limitations to the facts that are needed to solve commonsense problems: the given knowledge may be incomplete; one may have to use approximate concepts and approximate theories; one will generally have to use non-monotonic reasoning to reach conclusions; and one will need some ability to reflect upon one's own reasoning processes. Morgenstern provides an example of the commonsense informatic situation in the problem of two friends arranging to meet for dinner at a restaurant. (5) Explicit vs implicit knowledge. Commonsense knowledge is often implicit. whereas the knowledge needed to solve well-formulated difficult problems is often explicit. For example, the knowledge needed to solve integrals can be found in explicit form in a standard calculus textbook. However, the knowledge needed to arrange a dinner meeting exists in vague, implicit form. Implicit knowledge must first be made explicit, which is a time-consuming task requiring a serious knowledge engineering effort. Domain knowledge. A huge amount of knowledge is needed to do even simple forms of commonsense reasoning. For example, to figure out what sorts of objects will work as stakes in a garden--a reasoning task that seemingly demands no effort--requires knowledge of plant materials, how plants grow, flexibility and hardness, shapes of plants, soil texture, properties of wind, spatial reasoning, and temporal reasoning. (6) Although there have been a number of efforts to capture large amounts of world knowledge, most notably the Cyc '• project, (7) we are not at this point aware of any knowledge base that contains the information necessary to reason about stakes in a garden or about fumbling for an object in one's pocket. This Technical Forum piece does not present a solution to these difficulties. Rather, we are attempting to see how far we can progress on an important commonsense reasoning problem even in the presence of such difficulties. Story understanding as a vehicle for studying commonsense reasoning Story understanding requires addressing the commonsense informatic situation. A story understanding system should be able to read and understand a story, and demonstrate its understanding by (1) answering EFTA00226833
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questions about the story, (2) producing paraphrases and summaries of the story, and (3) integrating the information the story contains into a database. Further, useful results from this work will have a direct impact on many business products and services. A brief history of story understanding systems. Starting in the 1960s, (8) researchers have studied story• understanding and have built systems that can read and answer questions about simple stories. An early system built by Chamiak (9) used a single mechanism, test-action demons, for making inferences in understanding. In the 1970s, Schank and Abelson (10) proposed scripts, plans, and goals as knowledge structures for understanding. These knowledge structures were incorporated into the SAM (I I and PAM (12) story understanding systems. In the 1980s. knowledge structures for emotions, story themes, and spatial/temporal maps were incorporated into BORIS. (13) AQUA (14) used case-based reasoning to retrieve and apply explanation patterns in order to answer questions raised by anomalies encountered while reading a story. CRAM (15) used a connectionist approach to story understanding. Recent story understanding systems have adopted the approach of understanding a story by building and maintaining a simulation that models the mental and physical states and events described in the story, as demonstrated in ThoughtTreasure. (16) The advantage of this approach is that it is easy to answer questions about the story simply by examining the contents of the simulation. Cntical problems for story understanding systems. The story understanding systems built so far work only on the particular stories they are designed to handle. For example, SAM (I I) handles five stories, BORIS (13) three, AQUA (14) five, and ThoughtTreasure (16) three. What prevents story understanding systems from scaling up to hundreds of previously unseen stories? We contend that story understanding research is blocked on three critical problems: (1) complexity of the structure of natural language, (2) necessity for large commonsense knowledge bases, and (3) combinatorial explosion in the understanding process. Complexity of the structure of natural language. Rare is the simple subject-verb-object sentence that maps into a simple proposition. More typically, text contains numerous language phenomena such as adverbials, compound nouns, direct and indirect speech, ellipsis, genitive constructions, and relative clauses. (17) Present-day syntactic and semantic parsers have trouble producing accurate parses of typical story sentences. Necessity for large commonsense knowledge bases. Understanding even simple stories requires knowing a huge number of facts. For example, understanding the first paragraph of The Cat in the Hat requires knowing about children's play, how children can be affected by winter weather their relationship to their parents, and notions of discipline, boredom, surprise, and risk. Similarly, as (IS) points out, the first paragraph of The Tale of Benjamin Bunny assumes familiarity with concepts o quantity, space, time, physics, goals, plans, needs, and communication. Combinatorial explosion in the understanding process. Multiple possible interpretations arise at all levels of language. Words are ambiguous as to part of speech and word sense. Sentences are syntactically ambiguous. There are several possible explanations for any action of a story character. several possible explanations for those explanations, and so on. We get a combinatorial explosion: the understanding process must search an extremely large space of possibilities. Approaches to critical problems in story understanding. that can be done? We propose a three- pronged approach. First, to deal with the complexity of the structure of natural language, we make a major cut in complexity by going back to books for early readers. Second, to deal with the necessity for large commonsense knowledge bases, we propose to identify the domains most frequently used in a restricted set of stories and to address these first. Last, to deal with the combinatorial explosion in the understanding process, we propose a new paradigm for commonsense reasoning: an architecture of diversity. Early readers. Early reader texts arc designed for preschool and kindergarten students. These texts employ a small or controlled vocabulary, short sentences, and limited language constructions. Working with early reader texts will enable us to effectively solve the language front-end problem using existing research techniques. EFTA00226834
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Text annotation for domain identification. We cannot hope to deal with the commonsense informatic situation head-on. The point of icCarthy's 1996 paper (4) 's that any domain can be relevant to a particular problem: when reading a story, any area of knowledge ma be necessary for comprehension. This is less true for stories designed for very young readers: although, as our examples above show, a great many concepts and domains arc still needed for full comprehension even of early reader texts. Nevertheless, we believe we can make progress by choosing to address those domains that most frequently turn up in children's stories. Such an approach would, we hope, make the problem tractable. We thus propose the following corpus-based approach. We start with a corpus of stories at the preschool and kindergarten levels and divide the corpus into a development set and a test set. We manually annotate each story in the development set with an informal inventory of what domains of commonsense knowledge and reasoning must be addressed in order to understand the story. We sort the domains by their frequency and attempt to develop methods to understand the domains that occur most frequently. We start with the most frequent domain, proceeding to the next most frequent domain, and so forth. Development proceeds on the development set, and a final evaluation of the generality of the system is conducted on the previously unseen test set. Wc iterate this process on successively higher reading levels, progressing to stories designed for Grades I, 2, and 3. This approach, based on an incremental series of experiments, will enable a significant research focus at each step on an architecture of diversity. To demonstrate how this approach would work, we formed a corpus of 15 early reader stories and annotated them as to the domains of common sense necessary for understanding them. The vocabulary size was 561 words. The top 10 domains of common sense arc shown in Table I. This provides us with a path for research in understanding the story corpus: focus on handling the most frequently appearing domains of common sense. Dealing with these concepts is by no means trivial. We plan to leverage the extensive work that has been done in these areas. Such work includes: ThoughtTrcasure, (16) NETL2, (19) Cyc, (7) Shanahan's formalization of time, (20) the RCC formalization of space, (21) and Kuipers's Spatial Semantic Hierarchy. (22) We will also employ rapid knowledge formation techniques such as Open Mind. (23) An architecture of diversity Many attempts to build intelligent computers have hunted for a single mechanism (such as universal sub-goaling, propagation rules, logical inference, probabilistic reasoning) or representation (such as production rules, connectionist networks, logical formulas, causal networks) that would serve as a basis for general intelligence. Why have these approaches so far failed to achieve human-level common sense? We believe that the problem is too large to solve using any single approach. Human versatility must emerge from a large-scale architecture of diversity in which each of several different reasoning mechanisms and representations can help overcome the deficiencies of the other ones. (24,1) Our hypothesis is that such an architecture can overcome the combinatorial explosion problem in story understanding. Multilevel cognitive architecture. We conjecture that the information processing architecture of a human is something like the three-level architecture developed by Sloman in the Cognition and Affect project (25) (Ii-Cogaff), shown in Figure 1. This conjecture is based on evidence of many kinds from several disciplines, and constraints on evolvabilitl, implementability in neural mechanisms, and functionality. (26) [FIGURE 1 OMITTED) Reactive processes are those in which internal or external states detected by sensors immediately trigger internal or external responses. Deliberative processes are those in which alternative possibilities for action can be considered, categorized, evaluated, and selected or rejected. More generally a deliberative mechanism may be capable of counterfactual reasoning about the past and present and hypothetical reasoning about the future. The depth, precision, and validity of such reasoning can vary. Meta- management processes add the ability to monitor, evaluate, and to some extent control processes occurring within the system in much the same way as the whole system observes and acts on the environment. The three layers operate concurrently and do not form a simple dominance hierarchy. Arrows represent flow of information and control, and boundaries need not be sharp in all implementations. EFTA00226835