Pat was feeling sleepy so Ben regales him with one of the most infuriating thought experiments of all time: The Sleeping Beauty Problem. Concocted by Ben's very own thesis adviser Professor Adam Elga (seriously), The Sleeping Beauty Problem was submitted to the world in 2000 and it has boggled minds ever since. Listen to the episode to hear the full scenario, but here let it be asked: Are you a Halfer? Or a Thirder? We all hate this.