This is one of my favorite Alan Kay talks of all time (I think this is the right version, but at the time it wasn't on YouTube)...

Programming and Scaling - Alan Kay https://www.youtube.com/watch?v=YyIQKBzIuBY

There's also one where he discusses anthropology and the human universals, but the title of that talk has escaped me for years. Anyone remember what that one's called?