Play (3:18) February 18, 2016 An agnostic physicist and a Christian biologist on the evidence for their beliefs Ken MillerBrown University David HelfandColumbia University Jump To Comments Brown biologist, Ken Miller, and Columbia physicist, David Helfand, respond to a question from an audience member on why they hold their beliefs. Share This Talk Play (3:18) Topics Featured Reason Embed | Brown biologist, Ken Miller, and Columbia physicist, David Helfand, respond to a question from an audience member on why they hold their beliefs.