The History Channel's 2nd Season Project Blue Book Premiere

Bad as ever!

Are (some) UFOs illusions?

https://www3.nd.edu/~jspeaks/courses/mcgill/370/ayer-argument-illusion.html

How the ancient world thought about Hallucinations

https://newrepublic.com/article/116159/hallucination-and-mental-disorders-ancient-world