I found the fact that more information does not necessarily lead to better decisions interesting.
“Michael Mauboussin of Legg Mason, a fund-management group, cites a study that gave horse-racing handicappers varying amounts of information when ranking horses. The more information they received, the more confident they became about their answers. But the success of their predictions was actually worse when given 40 pieces of information, than when given five.”

Makes you think.

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