Thanks. A great quote from the link:

I mean, I’m not terrible at math. I managed to scrape together an A in Calculus II, the last math class I was required to take and not coincidentally the last math class I ever took. I did it by memorizing the algorithms involved and plugging things into them, all the while desperately praying that there weren’t any deviations, however minor, on the test. This isn’t normal for me. In every other field, concepts slide naturally into my mind and I can manipulate them however they want, like fitting a bunch of Lego blocks together to make limitless possibilities.

I would guess myself that someone able to write the game theory sequences he wrote is someone able to fit all of the relevant concepts together like LEGOs.