Occam's Eraser

A colleague of mine suggests a simpler theory of why so many people stink at math: "Math is hard, people are stupid." I don't think this explains everything (such as why so many otherwise intelligent people I know can't deal with math), but it probably explains more than either of the more complicated theories discussed below. There are different forms of intelligence, after all, and perhaps the kind of intelligence needed for math is just more scarce. Of course, the real explanation is probably a combination "all of the above."