How can a lie become true? In this episode, Dr. Aaron Blaisdell and I create a game show that is actually a giant “human Skinner Box” to observe the formation of superstitious beliefs. And Dr. Samuel Veissière helps me design and perform a placebo reverse exorcism, harnessing the power of belief in both science and religion to convince normal people that a spirit has possessed their bodies. Available with YouTube Premium - https://www.youtube.com/premium/originals. To see if Premium is available in your country, click here: https://goo.gl/A3HtfP