The more time scientists spend designing computers, the more they marvel at the human brain. Tasks that stump the most advanced supercomputer -- recognizing a face, reading a handwritten note -- are child's play for the 3-lb. organ. Most important, unlike any conventional computer, the brain can learn from its mistakes. Researchers have tried for years to program computers to mimic the brain's abilities, but without success. Now a growing number of designers believe they have the answer: if a computer is to function more like a person and less like an overgrown calculator, it must be built more like a...
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