When Pierce is talking to Britta before their hypnotherapy session, a camera and operator can be spotted in the reflection on the tuba behind Pierce.
The first time Pierce "hypnotizes" Britta, he trips over some band equipment and collapses onto the floor. Britta pretends to be hypnotized to make him feel talented, and he lays on the floor cursing his talent, that nobody can help him. However, he could have simply uttered the trigger word, "gorilla".
Jeff states that Jesus said "There is none righteous, no, not one." Jesus didn't say that. It was from Paul's letter to the Romans (which itself was a paraphrase from Psalm 14).
Jeff states that in The Stanford Prison Experiment 21 out of 21 students abused their fellow students. In reality only 12 participants were guards and of those roughly 4 of them were abusive to the prisoners.