Corrections

Why this page exists

We write about science. Science changes. Sometimes a study gets read wrong. Sometimes a paper that was cited gets retracted. Sometimes the population data was right and the interpretation was not. When that happens, the correction owes you three things: the original claim, the corrected claim, and what changed in the reasoning. It belongs in the open, on the post where the original claim lived, on the same URL.

A corrections page that exists before there is anything on it is the point. The discipline of publishing this page shapes the discipline of writing the rest of the site.

What counts as a correction

• Factual error — a number, a citation, a study finding, a date, or a quote that was wrong.
• Material change in interpretation — when new evidence makes the original conclusion wrong, or makes the certainty expressed in the original article too strong.
• Citation rot — when a paper that was cited gets retracted, or when a clinical guideline the article relied on gets updated and the article no longer reflects current consensus.
• Disclosure gap — if a financial or professional relationship existed at the time of writing that was not disclosed.

What does not count

• Typos, grammar, and style edits. Fixed silently in the post.
• Disagreements with the conclusion. Those belong in conversation — by email, in comments — not in the corrections log. We engage in good faith and will update if persuaded, but we do not log disagreement as error.

How corrections appear in real time

When a correction is made, the affected paragraph in the original article receives an inline note:

If the correction is material enough to change the headline conclusion of the article, a notice is added at the very top of the post and a correction email goes out to subscribers within 72 hours, sent to the same audience that received the original.

The URL of a corrected article never changes. We do not delete corrected articles. We do not redirect them to a new URL. The original article keeps its permanent home, with the correction visible inline and logged on this page.

Factual errors vs. updated science

These are different and we treat them differently.

A factual error is a mistake in what the article reported — a misread number, a wrong PMID, a misattributed quote. The article was wrong at the time it was published. These get a correction note and an entry in the log below.

An update from new evidenceis different. The article wasn't wrong when published; the field moved. These get a top-of-article “Updated” note with a date and a brief explanation of what changed, and they appear in a separate “Updates” section of the log when the change is material. We don't collapse the two — “the field updated” is not an excuse for “we were wrong,” and “we were wrong” is not the same epistemic event as “the field moved.”

Newsletter corrections

If the error went out in a newsletter, a correction newsletter follows within 72 hours, sent to the same list that received the original. It is clearly labeled “Correction to [date] newsletter” and states the error, the correction, and a link to the corrected article.

How to flag an error

Email corrections@calibratedsignal.com with the article URL, the specific claim you believe is wrong, and (if available) the source that contradicts it. We respond within five business days. If the correction is confirmed, it is published within 24 hours of confirmation, with credit to the reader who flagged it (with permission).

Errata log

Most recent at top. Empty for now — Calibrated Signal v2 launched in 2026 and the first wave of corrections will appear here as the archive grows.

No entries yet.

Related pages

For the editorial standards behind every article, see How I Evaluate Evidence. For the line between editorial coverage and clinical advice, see Medical Disclaimer. For the affiliate and conflict-of-interest policy, see Disclosures. For data practices, see Privacy Policy.