Comment by dekhn

I took some sort of IQ test when I was a kid and there was an entire section that was "if you rotate this object around that axis, it matches which of the followin g options". Try as I might, I can't picture this in my head (picturing anything other than a sphere or a cube is tough) but I found that I could look at the options and logically exclude them in a very tedious way by inspection.

It's one of the reasons I like computer graphics so much: the computer does the rotation for you! Stereo graphics (using the funny LCD glasses) was a true revelation to me, and learning how to rotate things using matrics was another.