Bill O'Reilly is a Moron - UPDATED

What causes the tides to roll in and out? According to Bill O'Reilly, it can't be explained. That's his argument when debating American Atheist Group President David Silverman.

O'REILLY: I'll tell you why [religion's] not a scam, in my opinion: tide goes in, tide goes out. Never a miscommunication. You can't explain that. 

SILVERMAN: Tide goes in, tide goes out? 

O'REILLY: See, the water, the tide comes in and it goes out, Mr. Silverman. It always comes in, and always goes out. You can't explain that.

Gee, Bill, it couldn't be science, could it?

UPDATE (1/7/11): Stephen Colbert discusses Bill O'Reilly's mystery.