Brain drain

Ever hear that humans only use 10 percent of their brains? Sure, we've all heard that somewhere. But, is it true? What would it be like if you switched off 90 percent of your brain function? Do you still think you could beat your little brother at chess? I doubt that you could beat a couch at Trivial Pursuit. In a 2004 Scientific American feature, one brain behavior scientist spells out a convincing "no" to 10 percent brain use. Link.