Movie star Brad Pitt cozies up by Stephen as they contemplate humanity's most puzzling uncertainties in this Colbert Classic from the Late Show vault.\nWe want your feedback on The Late Show Pod Show with Stephen Colbert! Visit\xa0http://www.colbertlateshow.com/podsurvey\xa0to take a brief survey.\nLearn more about your ad choices. Visit megaphone.fm/adchoices