This season we got more esoteric. We had an episode on seven deadly sins — brains that are behaving badly in New Orleans, like lust, and what going on in a brain experiencing each of those sins. We also had a "neuroscience of religious experience" episode. The finale is all about survival, which was very interesting stuff: how stress impacts performance with flight-or-fight mode. We had an ex-Navy Seal who took the episode's participants to Colorado, and we strapped them into a chair that then gets thrown over a cliff. We attached it to a bungee-cord-like wire, and we threw them overboard, but before we did that, we had them solve a series of puzzles that we repeated after they had been through the exercise. Solving a puzzle is different from killing a predator, and it was a cool way of witnessing how to mess with people's cognitive capacity.