크레딧 출연 리암 니슨 Self Richard Dawkins Self Richard Klein Self Steven Pinker Self Steve Kuhn Self Randall White Self Jean Jacques Hublin Self John Shea Self Michel Lorblanchet Self Richard Wrangham Self Andrew Whiten Self Robin Dunbar Self Sue Blackmore Self 스텝 John Heminway Writing John Heminway Production Michelle Nicholasen Production Abby S. Whitlow Production Chuck Scott Editing Sheldon Mirowitz Sound Kurt Biederwolf Sound Frank Vitz Visual Effects Vandy Savage Visual Effects Beau Janzen Visual Effects Ken Bailey Visual Effects Chris Leathers Visual Effects Fabio Tovar Visual Effects Brandon Perlow Visual Effects Brian Woodson Visual Effects Brian Dowley Camera Robert Elfstrom Camera Mike Fox Camera Terry Hopkins Camera Richard Bock Sound