Corrections

A correction records the original sentence, the replacement, the reason, and the time. Price ticks are not corrections. They are a new observation.

No substantive correction has been recorded. The research franchise, the lessons and this policy were published on 12 October 2026. If a sentence in them is wrong, it will be listed here rather than quietly replaced.

What a record will contain

• The page and the original wording.
• The replacement wording.
• Whether the error was a fact, a calculation, or an identity.
• The time the correction was published.