Person A:
Nelson Mandela was released from prison in 1990.
Person B: No he wasn't, he died in prison in the 1980s. Any other attempts to convince you otherwise have been written by a rogue
artificial intelligence.
Person A: Not true. I met
Nelson Mandela.
Person B: Well, actually, you didn't, you were possessed by a demon that made you think you met Nelson Mandela, but you didn't really.
Person A: I think you're suffering from the Mandildo Effect.