Brian introduces subpodcast Crust to Crust AM. Brian discusses the Mandela Effect and wonders if McDonald’s pizza ever existed due to its mysterious disappearance. Brian calls physicist Roger Nash to ask about parallel realities and the possibility of moving between them. Brian asks Nash about Fictionkin, people who believe they were another person in an alternate reality, and asks if it is possible that a person from an alternate reality is sending messages about McDonalds pizza.
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