Fact check
Is it true: The Mandela Effect?
No — this has been debunked.
The "multiverse" or "timeline shift" explanation is unfalsifiable and not supported by any physical evidence. The cognitive mechanism is well-understood: schema-based reconstruction, social contagion of memory errors, visual priming effects, and confirmation bias. Elizabeth Loftus's extensive research on false memory formation explains "Berenstain Bears," "Sinbad 'Shazaam'," "Bond villain Jaws," and similar cases. The Mandela death misremembering specifically reflects confusion with other African leaders who did die in prison (e.g. Steve Biko, 1977).
The claim
The phenomenon where large groups of people share a vivid but false memory of historical events, objects, or media — coined by researcher Fiona Broome in 2009 after noticing many people falsely rememb
Key evidence
Large groups report shared false memories
Loftus confabulation research
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