Glorfindel of Gondolin

Provoked, I guess, by another "hard-nosed quasilibertarian policy analysis" that includes unsurprising language like this:

"Mr Saletan seems to be ignoring a very basic question, implied by his own statement that half of all terminated pregnancies occur in women who weren't using any protection: why are so many people engaging in behaviour that they have been repeatedly told will lead to an unwanted pregnancy? Especially when there are cheap and effective prophylactics at the nearest drugstore? Answer: because it's not very costly to do so."