Andrej Karpathy taught cs231n. The question is about Sam Altman who didn't teach anything related to NL. He's on the board of OpenAI because he was one of its founding investors.

He did? I only knew of 183B which is "How to start a startup"

Thanks, that makes sense. So now the question is - how did Sam become a YC/Angel investor from someone who taught a class at Stanford? I think we need an interview with Sam.