People can influence one another's delusions: Dewhurst, Kenneth; Todd, John (1956). "The psychosis of association: Folie à deux.". Journal of Nervous and Mental Disease. 124: 451–459 Delusional people can give mentally healthy people delusions: Arnone, Danilo, Anish Patel, and Giles Ming-Yee Tan. "The nosological significance of Folie à Deux: a review of the literature." Annals of general psychiatry 5.1 (2006): 1. The whole debate: https://www.youtube.com/watch?v=3R4DYhpvNzc Yes, I do have a Patreon account, thank you for asking: https://www.patreon.com/themessianicmanic My other channel about other stuff: https://www.youtube.com/c/ReedWestward My Twitter: https://twitter.com/idiolekt My tumbr: https://www.tumblr.com/blog/themessianicmanic My facebook: https://www.facebook.com/themessianicmanic/ Here’s my society6 store if you’re interested in my pretentious minimalist poster designs: https://society6.com/themessianicmanic