My first thought was that odd numbers have soft edges, and even numbers are hard. I didn’t really know why I feel this way, but I always have. Your comment made me realise that geometry might have something to do with it.

What I still don’t fully understand though, is why I attribute personality types to numbers the way I do. Why do I think that 7 is dim–witted, and 2 is arrogant? You don’t have to have an answer. I just think about it sometimes.