Brief thought exercise: have you ever stopped and realized that the reason you're not a chimp is 1/50th of your DNA?

[youtube http://www.youtube.com/watch?v=K4S2qJboi4I&w=600&h=315]

I read Guns, Germs and Steel on the first intercontinental flight I ever took (which sadly didn't happen until I was 28), and while that's maybe not the best flying-over-the-Atlantic reading material, it was pretty captivating (it has sold millions of copies). I came across this interview w…