Let us use 10,000 fictional investment managers... [O]nce a manager has a single bad year, he is thrown out of the sample. ...[T]oss a coin; heads an… - Nassim Nicholas Taleb

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Let us use 10,000 fictional investment managers... [O]nce a manager has a single bad year, he is thrown out of the sample. ...[T]oss a coin; heads and the manager will make $10,000 over the year, tails and he will lose $10,000. ...We have, in a fair game, 313 managers who made money five years in a row. ...[I]f we throw one of these ...into the real world we would get ...comments on his remarkable style, his incisive mind... His biographer will dwell on ...a great mind in the making. ...[S]hould he stop performing (...his odds ...have stayed at 50%) they would start ...finding fault with his dissipated lifestyle. They will find something he stopped doing, and attribute his failure... The truth ...he simply ran out of luck.

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About Nassim Nicholas Taleb

Nassim Nicholas Taleb (born 1 January 1960 in Amioun, Lebanon) is an essayist, epistemologist, researcher, and former practitioner of mathematical finance.

Biography information from Wikiquote

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Alternative Names: Nassim Taleb
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Think of the following event: A collection of hieratic persons (from Harvard or some such place) lecture birds on how to fly. Imagine bald males in their sixties, dressed in black robes, officiating in a form of English that is full of jargon, with equations here and there for good measure. The bird flies. Wonderful confirmation! They rush to the department of ornithology to write books, articles, and reports stating that the bird has obeyed them, an impeccable causal inference. The Harvard Department of Ornithology is now indispensable for bird flying. It will get government research funds for its contribution.

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