[Kamog]

Only 4? Surely humans can comprehend numbers bigger than 4 ??

If we're talking about numbers we can visualize in our minds, I think it's bigger than 4 but probably less than 100. I can visualize geometric shapes like triangle, square, pentagon, hexagon, and octagon, so I know I can visualize at least up to 8. I can visualize the image of two hands, with 10 fingers, so I know I can visualize 10. Or a dozen eggs for 12.

Then in my mind I can picture a group of, say 5 octagons arranged in a pentagon pattern, which make 40 sides, and so on. But it does get more difficult when the number gets much bigger than that.