The first thing you need to know about natural selection is that it's everywhere. Reality's most powerful tool of precision is like a great Grim Reaper wrapped around the face of the internet, relentlessly jamming its truth into anything that smells like bigotry. In fact, the history of the recent elevator-gate scandal, which doubles as a history of the skepticism movement, reads like a what's what of ideas.
h/t, of course, to the Mighty Taibbi. Read more about Idea remix