How to Annoy Dave:

I work with some very "interesting" people. This is a conversation I had a few days with a co-worker, pretty much verbatim. He was talking about crappy movies, and the conversation went from there:

DAVE: Um, I don't really watch too many movies these days. I mostly read.
CO-WORKER: I'm reading a good series right now.
DAVE (Not really interested): Oh?
CO-WORKER: I'm reading the Earth's Children series. It's good.
DAVE: I've never heard of them.
CO-WORKER: The first book is called "Clan of the Cave Bear". It's -
DAVE: Oh, right. I've heard of that. It's by that girl-
CO-WORKER: Her name is Jean Auel. The first book is Clan of the Cave Bear. It was written in 1980. The second book is called The Valley of Horses. It was written in 1982. The third book is called The Mammoth Hunters. It was written in 1985. The fourth is called The Plains of Passage. It was written in 1990. The fifth book is called The Shelters of Stone. It was written in 2002. The sixth book is called The Land of Painted Caves. It was written in 2011.
DAVE: Um. Wow. That sounds like, uh, quite the production run.
CO-WORKER: Yes.
DAVE: Um.
CO-WORKER: The story starts with a young cro-magnon woman, named Ayla, who is split with her tribe. She doesn't eat for a week, and nearly dies of exposure, but she is able to stay hydrated during this time. She comes along a tribe of neanderthals, who adopt her. They don't seem to use language, but (this continues for a few minutes that felt like hours, where he goes into Neanderthal custom and whatnot before I interrupt)
DAVE: Oh, wow. So, it's someone's story about what neanderthals were like.
CO-WORKER: Yes.
DAVE: It's funny, though. A lot of those theories no longer work - there are different theories on neanderthals than there were years ago.
CO-WORKER: Oh, it's just fiction. Everyone knows cavemen didn't exist.
DAVE: Wait, what?
CO-WORKER: I don't believe in Evolution.
DAVE: Ah. I see.

He then proceeded to try and sell me herbal vitamins that he pimps on the side, in an Amway-esque pyramid scheme, and told me he had stuff that would help fix up my diabetes. I told him I only bought herbal vitamins from people who believed we descended from apes. Stony silence ruled my workplace.

And no, I don't feel bad mocking someone with obvious mental issues. Not one iota.