If you're a fund manager or stockbroker in times like these, it helps to have a computer doing the thinking for you. Artificial intelligence technology, which has been used to predict markets and pick stocks for more than 15 years but still is not widespread, can insulate those managing millions from the emotional torment that can be inflicted by corporate scandals hacking at the stock market.

Humans, no matter how levelheaded, can be swayed by emotion. Machines are immune. They can't feel.

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