The 3rd edition of Statistical Consequences of Fat Tails is available and adds 3 chapters and an appendix on Max Entropy distributions including Tsallis Entropy.
Mostly true True in substance, wrong in a detail.
Factual: Statements about the present or the past, checked against the record: did they hold up?
The second judge said mixed; the verdict shown is the first judge's.
What would count as true or false
Judged as of 2025-09-21. True: a 3rd edition of 'Statistical Consequences of Fat Tails' was available (published or released) by about that date and, compared with the 2nd edition, adds three new chapters and an appendix on maximum-entropy distributions that covers Tsallis entropy. Mostly true: the edition was available and adds the appendix with Tsallis content, but the chapter count differs slightly (e.g. two or four). Mixed: the edition exists, but only one of the added components (the chapters or the Max Entropy/Tsallis appendix) is confirmed. Mostly false: the edition was only announced or in preprint, not available, by the date. False: no 3rd edition existed, or it lacks these additions.
Set before the research began.
Evidence (4)
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E1 Statistical Consequences of Fat Tails: Real World Preasymptotics, Epistemology, and Applications arXiv · 17 September 2025 Own record
“The third edition corrects minor typos and adds 3 chapters synthesized from published papers plus an appendix on maximum entropy distributions.”
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E2 Statistical Consequences of Fat Tails: Real World Preasymptotics, Epistemology, and Applications arXiv · 17 September 2025
“[v4] Wed, 17 Sep 2025 07:38:53 UTC (33,303 KB)”
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E3 Statistical Consequences of Fat Tails (Taleb) QuantFinanceWiki · 10 September 2026
“This third expanded edition includes three additional chapters and an appendix.”
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E4 Nassim Nicholas Taleb Releases 3rd Edition of Statistical Consequences of Fat Tails Nassim Taleb .org (UNOFFICIAL news site) · 23 September 2025
“On September 23, 2025 By Admin In Academic, Links, Statements, Writing, X”
Reasoning
The arXiv record shows version v4 of the book was posted on 17 September 2025, before the judging date [E2]. The abstract of that version, written by the author, says the third edition adds 3 chapters drawn from published papers plus an appendix on maximum entropy distributions [E1]. A later third-party wiki independently confirms that the third edition adds three chapters and an appendix [E3]. None of the quoted evidence confirms that the appendix covers Tsallis entropy, so that one detail of the claim is unverified.
Cite this claim
Nassim Taleb, “The 3rd edition of Statistical Consequences of Fat Tails is available and adds 3 chapters and an appendix on Max Entropy distributions including Tsallis Entropy.” (said 21 September 2025). Verdict: mostly true. Reliability API, claim c_6f5417fab787, method 0.1.0+28da144b, dataset release v1.1.2. https://epistacklabs.com/claims/c_6f5417fab787
This claim is in dataset release v1.1.2, with the same verdict.
Reply to this claim
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