There are two things about blogging that you need to know and they are:
1. Everyone who runs one is a kook.
2. Everyone who comments in one is a kook.
This is from the excellent Two Things blog compiled by Glen Whitman. He says that the blog came about because:
A few years ago, I was chatting with a stranger in a bar. When I told him I was an economist, he said, “Ah. So… what are the Two Things about economics?”
“Huh?” I cleverly replied.
“You know, the Two Things. For every subject, there are really only two things you really need to know. Everything else is the application of those two things, or just not important.”
“Oh,” I said. “Okay, here are the Two Things about economics. One: Incentives matter. Two: There’s no such thing as a free lunch.”
Ever since that evening, I’ve been playing the Two Things game. Whenever I meet someone who belongs to a different profession (i.e., a profession I haven’t played this game with), or who knows something about a subject I’m unfamiliar with, I pose the Two Things question. I also posed the Two Things question on my blog, where it elicited many responses in the comments section and on otherblogs. This page is a collection of responses to the “Two Things” question, collected from various pages on the web, with credit given when possible.
There are many other great two things on the blog and I cannot recommend highly enough that you follow the link at the top and visit the site. (Hat Tip a link from the twitter feed of Karen Melchior.)