Corrections

Every factual error found in a published video, what it was, and what replaced it. Nothing is ever removed from this page.

The videos state their sources and mark the claims that sit close to the edge of what the literature supports. That only means something if the mistakes are on the record too. So they are here — including the ones caught before publication, because a log that starts empty tells you nothing about how carefully anything was checked.

Found an error? Write to corrections@prompteur.berlin with the timestamp and, if you have one, a source. Corrections get published here with the date and, if you want, your name.

What does not belong here: disagreements about interpretation. The videos say out loud where they use an assumption or where a question is unsettled. Weighing those differently is a different opinion, not a factual error — and mixing the two would make this page useless.

Impossible, Intractable, Unpredictable Are Not the Same Published — · runtime 13:56

Found before publication

  1. 2026-08-13 The Lorenz restart was in 1961, not 1963. The script dated the experiment with the rounded values to 1963. That is the year Deterministic Nonperiodic Flow was published; the restart itself happened in the winter of 1961. Was: “In 1963, Edward Lorenz was running…” Now: “In 1961…”, with the paper named as following two years later.
  2. 2026-08-13 “About one part in a thousand” was out by a factor of four. Rounding 0.506127 to 0.506 is a difference of roughly one part in four thousand. Now: “a few parts in ten thousand”.
  3. 2026-08-13 The Entscheidungsproblem is not about “any mathematical statement”. As posed by Hilbert and Ackermann it concerns the validity of statements of first-order logic. The original wording claimed more than the result supports.
  4. 2026-08-13 Rice’s theorem is from 1953, not 1951. 1951 is the dissertation; the citable publication is Trans. AMS 74 (1953), 358–366.
  5. 2026-08-13 “SAT solvers routinely handle millions of variables” was too broad. It holds for highly structured instances. Small, deliberately crafted instances can still defeat them, and the video now says so.
  6. 2026-08-13 The claim that machine learning does not extend the forecast horizon was too categorical. Vonich & Hakim, Atmospheric Predictability beyond 30 Days with Machine Learning (AIES 2026) report skill beyond 30 days — but only with initial conditions optimised in hindsight, which cannot be done in real time. The video now calls this unsettled rather than settled.
  7. 2026-08-13 Three framing errors, corrected. NP-hardness does not imply decidability, so “every one of these problems is decidable” now names the NP-complete ones only. A fixed 9×9 Sudoku is finite and says nothing asymptotic, so the video uses generalised Sudoku. And chaotic predictability is not a worst-case theorem, so the closing line no longer groups all three limits under “worst cases”.

Found after publication

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