R-280 widened admission from a [15,85] band to "the spread rate stands clear of
both ends by more than its own noise", which admits fights that are nearly
settled -- the_choir at 99.3%, the_stanchion at 6% -- as long as their noise is
smaller still. The page went on saying "whose outcome was ever in doubt", which
was a fair description of the band and is a loose one of the rule.
It now says "whose odds leave room for a difference to show", and the provenance
line prints the admission rule itself, read from the artifact rather than
paraphrased, so the page cannot drift from the guard again. The rule is phrased
as a clause in check-focus for that reason.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
