 Hidden Brain on Delaware Public Media is sponsored by you, our listeners, and by Dr. Bob Verapapa, who adopted Hidden Brain. Do you have a favorite program you'd like to adopt? Call us at 302-857-7228 or visit DelawarePublic.org. From NPR, this is Hidden Brain. I'm Shankar Vedantam. In 2005, an audience filed into the Brava Theater Center in San Francisco.