I only studied science up to GCSE level, so most of what I know was basically just what I've read online somewhere. I should have taken it further - it was the only class I always got straight A's in whether I studied or not, but I was kind of pushed into IT and English as I was pretty good at those too and I had no idea what I wanted to do (the problem with being INTP is that we can be all rounders - makes it very hard to pick a career). And generally, yeah, any time my brain is being challenged is a good pass time.