Here is a strange but true brain story about a guy who has trouble figuring out what number “5” represents, let alone adding and subtracting, but who has other unimpaired comeptencies. I find this interesting because the rationalist in me has always found the ability to comprehend math simply basic to having an intellect. I need to study the article further, but a quick read suggests he has an intellect without even a minimal capacity for math.
USUPhilosophy 