Here’s a hypothetical example: Imagine a super computer that could go through all the masses of data available about a particular company – its prospects, its leadership, its rivals, the sector, the economic backdrop – synthesize all that information and make an intelligent decision on whether to invest your money in that company. Foolproof, right? Then, one week after you’ve thrown all your money behind that company, the chief executive comes out as a Nazi sympathizer. The stock collapses and you are left holding the bag.

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