By exposing us to specific stimuli, Jason Silva can prime our brains to respond in certain ways. See how identical twins interview for the same job, in the same clothes, with the same resume. They even give the exact same answers--but the order of the words in their answers is slightly different. The result? One twin comes off negative, and the other gets the job. Would you believe that Texas seceded from the U.S. if a crazy-looking guy told you?