Darkness does things to the human mind. Research suggests that unleashes our imagination promoting "magical" thinking.

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Holley Moyes is an Associate Professor in Archaeology at the University of California, Merced. She specializes in the archaeology of religion, and much of her research focuses on ritual cave sites.

This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx