Nothing at all. Everything I figured out is based on what I had to learn or found strange here.

[ So he used logic, and he could say that he wasn't dumb, because it wasn't so hard to solve more advanced maths. ]

I had to learn the calendar here, same as I did with the technology, and the whole thing with there being several languages is kinda weird to me. Which makes me the weird one, so take that whichever way you want.