A few months ago I was talking to a friend who is pretty highly "connected," insofar as he seems to know everyone. So we were talking about some genetics issues and I asked him, "You know who Lee Silver is, right?" There was a pause, and my friend was like, "I just got off the phone with him."
A wee while ago I learned a good answer to "It's a small world", to wit "No, it's just that the World is a small bourgeois conspiracy".