Same here. I guessed because you said you studied "economics and languages" (Economie-Talen) and because you had a bunch of teachers discouraging higher scientific studies because of less math background.

You do need to be really good in maths, have a really solid basis or work your ass off to succeed in the first few years of university-level computer science education. You did the latter, and you have my respect for that!

Well, that explains your lousy high-school teacher... The only metric we employ in our schools to measure teachers' performance is a. do they fit in and b. can they keep their classes under control.