His position was fiercely criticised by Professor Conor Gearty of the London School of Economics, one of Britain's leading experts on human rights law.

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Another panelist on Wednesday, Michael Gearty, a portfolio specialist for Transparent Value Mutual Funds, said that his general approach to investing was to mathematically and unemotionally figure out what something is worth.

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Professor Gearty accused Justice Scalia of creating a "nightmare scenario of mass destruction that all defenders of torture so need, to hide the fact that the reality of torture will be quite different".

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