This guy is brilliant and I measure that by the fact that I can actually understand him rather well considering the subject matter is a completely different fie

This guy is brilliant and I measure that by the fact that I can actually understand him rather well considering the subject matter is a completely different field than my own. He is mostly reiterating what he said at a TED talk, but his enthusiasm is contagious enough to make me want to hear it again. When Ray Kurzweil says the exact same thing, I feel a little skeptical like a salesman is trying to push snake oil on me, but this guy is so much more convincing because he's like a hacker friend trying to explain why immutability is great.