This presentation has great content but it's let down somewhat by the guy's presentation style. He's an adult professor in his late 40s with the mannerisms of

This presentation has great content but it's let down somewhat by the guy's presentation style. He's an adult professor in his late 40s with the mannerisms of a teenage redditor: a veneer of self-impressed haughtiness over clear insecurities. All the high-pitched exclamations were hard to listen to.