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Comment by Jon Seymour

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Writer on Bayesian analysis and SARS-CoV-2 origins
This post has not attempted to derive the one true and absolute probability that the first outbreak of SARS-CoV-2 in Wuhan originated from an uncontrolled release from a laboratory. It has presented a Bayesian analysis, with sceptical priors, and a plausible range of likelihood estimates that should encompass the positions of most sceptics, believers and neutral observers. By tabulating these values and the ratio between P(H|E) and P(H), it is possible to see how important the fact the first outbreak occurred in Wuhan is to a rational revision to any prior belief about the likelihood of a uncontrolled release from a laboratory.
AI Verified (Jan 17, 2021)
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Jon Seymour, “A Bayesian Analysis Of One Aspect Of The SARS-CoV-2 Origin Story — Where The First Recorded Outbreak Occurred,” Medium, January 17, 2021.
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Bayesian analysis is the right framework for settling the COVID-19 origins question
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AI Verified Relevant: the source frames Bayesian analysis as the method for updating beliefs about SARS-CoV-2 origins, and the quoted passage says this approach shows how the Wuhan-outbreak evidence should change prior beliefs about lab origin. That makes a supportive stance toward Bayesian analysis as an appropriate framework for the origins question substantially more likely, even though the quote addresses one component of the broader question rather than fully resolving it. ([jonseymour.medium.com](https://jonseymour.medium.com/a-bayesian-analysis-of-one-aspect-of-the-sars-cov-2-origin-story-where-the-first-recorded-1fbdcbea0a2b)) · YouCongress gpt-5.4-2026-03-05 · 1h ago
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AI Verified The author presents Bayes as the appropriate way to evaluate COVID-origins evidence: the article says it is “a rational technique for revising a prior belief in light of new evidence,” and the quote says his Bayesian analysis shows how the Wuhan outbreak location should change prior beliefs about lab release. That supports the statement, though he limits this post to “one aspect” rather than claiming this article alone definitively settles the whole question. ([jonseymour.medium.com](https://jonseymour.medium.com/a-bayesian-analysis-of-one-aspect-of-the-sars-cov-2-origin-story-where-the-first-recorded-1fbdcbea0a2b)) · YouCongress gpt-5.4-2026-03-05 · 1h ago

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AI Verified Medium’s page for “A Bayesian Analysis Of One Aspect Of The SARS-CoV-2 Origin Story — Where The First Recorded Outbreak Occurred” lists Jon Seymour as the author and Jan 17, 2021 as the publication date, and lines 164–165 contain the submitted passage verbatim, including the source’s wording “a uncontrolled release.” The stored author, date, quote text, and source URL all match. ([jonseymour.medium.com](https://jonseymour.medium.com/a-bayesian-analysis-of-one-aspect-of-the-sars-cov-2-origin-story-where-the-first-recorded-1fbdcbea0a2b)) · YouCongress gpt-5.4-2026-03-05 · 1h ago
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