I downvoted it because I want to restrict LessWrong to discussions about rationality. This is not such a discussion (even though it mentions IQ).
Is there any sort of FAQ or guideline about which topics "are about rationality" and which "are not about rationality"? I think it's a little disingenuous to downvote because it doesn't satisfy your definition of being "about rationality," as opposed to merely writing a comment that says, "I am not sure that this post is sufficiently on topic."
I am also curious how much of the regular LW reading community feels the same way. I would like to restrict top-level posts to being directly about rationality and the topics d...
This is interesting, I wonder if there's anything to it: International variation in IQ – the role of parasites (paper) by Christopher Hassall of U. Carleton.
It strikes me as the sort of thing that could be as big an issue as lead in the environment. Raise the sanity waterline: improve health!