Curiosity mostly. I liked to push what was possible on any language or system I was working on. I liked hacking systems or languages to do things they were no

Curiosity mostly. I liked to push what was possible on any language or system I was working on. I liked hacking systems or languages to do things they were not "supposed" to. That's always very educational :) Along the way, I managed to study most of a CS curriculum, but I didn't have that as a goal.