I mentioned Kubrick's "Dawn of Man" in the post below. Here it is:
See web-only content:
http://www.theatlantic.com/daily-dish/archive/2007/01/what-the-heck/231351/
This article available online at:
http://www.theatlantic.com/daily-dish/archive/2007/01/what-the-heck/231351/
