Mandela Effect

Article

Mandela Effect is a recurring concept in the Astral Codex Ten archive, appearing 2 times across 2 issues between May 29, 2024 and June 18, 2025. The archive places it in contexts such as “it was just one of those Berenstein Bear or Mandela Effect things where everyone has a false memory”; “shared visual Mandela Effect , where everyone seems to collectively believe the same false things about visual signs”. It most often appears alongside ACX, Anthropic, Britain.

Metadata

• Category: Concepts
• Mention count: 2
• Issue count: 2
• First seen: May 29, 2024
• Last seen: June 18, 2025

Appears In

• Links for May 2024
• ACX Grants 1-3 Year Updates

Related Pages

• • ACX (2 shared issues)
• • Anthropic (2 shared issues)
• • Britain (2 shared issues)
• • FDA (2 shared issues)
• • Google (2 shared issues)
• • Innovate Animal Ag (2 shared issues)
• • Latin America (2 shared issues)
• • Manifest (2 shared issues)
• • New York Times (2 shared issues)
• • Sam Altman (2 shared issues)
• • United States (2 shared issues)
• • US (2 shared issues)

External Links

• • http://web.archive.org/web/20221104130431/https://stevekirsch.substack.com/p/1m-bet-rules
• • http://web.archive.org/web/20221129133112/https://blog.rootclaim.com/rootclaim-accepts-500000-challenge-on-covid-vaccine-safety-efficacy/
• • http://web.archive.org/web/20221224061743/https://www.skirsch.com/covid/SaarWilf.pdf
• • https://archive.ph/pY4gF#selection-663.103-683.190
• • https://en.wikipedia.org/wiki/John_von_Neumann
• • https://ericturkheimer.substack.com/p/is-tan-et-al-the-end-of-social-science/comment/106431494
• • https://newrepublic.com/post/173668/republicans-declare-banning-universal-free-school-meals-2024-priority
• • https://replications.clearerthinking.org/replication-2022psci33-12/
• • https://web.archive.org/web/20230104080248/https://www.rootclaim.com/
• • https://www.newsweek.com/javier-milei-rent-control-argentina-us-election-kamala-harris-housing-affordability-1938127
• • https://www.nytimes.com/2020/12/27/business/media/heather-cox-richardson-substack-boston-college.html

Source Context

Recovered passages from the original issue text. When the raw archive preserved outbound links inside the source passage, they are listed directly under the quote.

Links for May 2024

May 29, 2024 · Original source

4: Related, breaking news: A popular Substack claims that COVID didn’t happen at all, and that both “lab leak” and “natural origins” are part of the higher-level conspiracy to distract people from the fact that there was never a virus in the first place. I wonder if I could even more Substack likes if I one-upped them with a theory that lockdowns never even happened, and it was just one of those Berenstein Bear or Mandela Effect things where everyone has a false memory.

Inline links: COVID didn’t happen at all

ACX Grants 1-3 Year Updates

June 18, 2025 · Original source

Among the most interesting are a replication of The Illusion Of Moral Decline (I wrote a post criticizing the original study here, but on purely conceptual grounds - I never doubted that the actual work was done honestly and correctly) and of the shared visual Mandela Effect, where everyone seems to collectively believe the same false things about visual signs like corporate logos (eg that there was a cornucopia in the Fruit of the Loom symbol). Both replicated fine.

Inline links: a replication of The Illusion Of Moral Decline, here, the shared visual Mandela Effect

Backlinks

• ACX Grants 1-3 Year Updates
• Concepts: M
• Links for May 2024