Independent review against fa483cf. One finding, blocking, and it ran the
scan rounds 13 and 14 left outstanding.
M6 accepted "test 5 fails" and "test 9 fails" as its observations. A test
fails for every reason, not only the one under test, so an unrelated writer
rejection satisfies both exactly as well as the intended cause. M6 could
have reported success while demonstrating nothing about pin 3a's scope.
Both halves now require the mutated outcome itself. After removing pin 3a,
test 5's stale commit must be observed to succeed, and the bundle to reopen
at the new generation with the stale base present. After broadening pin 3a,
test 9's otherwise unchanged commit -- one that does not touch
canonical_base -- must be observed rejected specifically by the broadened
writer rule, named in the report, not merely erroring.
The scan is complete: M1 through M5b survive it, M6 did not. That the one
remaining instance was in M6 -- the mutation twice rewritten for
unexecutability -- is worth noting. A mutation can be made runnable and
still not be evidential.
The principle, stated once so it need not be rediscovered: the evidence a
mutation owes is the behaviour it changed, not the assertion it broke. A
broken assertion is a symptom with many possible causes; the changed
behaviour has one. Every mutation in section 4 now names an outcome rather
than a failure.
Section 7 item 4a's M6 row was widened to point at M6 rather than restate
"test 5 fails; test 9 fails", which had become the weaker of two statements
of the same requirement -- round 14's lesson applied before it could bite.
Still NOT RATIFIED, NOT DISPATCHABLE; that call is not mine to make.
Findings 9, 6, 6, 5, 4, 3, 3, 2, 2, 1, 3, 2, 1, 1, 1. Blocking 4, 4, 4, 4,
2, 3, 3, 2, 2, 1, 2, 2, 1, 1, 1. Fifteen rounds, none returning zero, but
the character of the findings has changed: round 13 found a kind never
looked for, round 14 a contradiction round 13 created, round 15 the last
instance of round 13's kind with the scan complete across every mutation.
The known unexamined surfaces are now enumerable, which they were not
before.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ps1szk2mSfgp4Cz21eVH9x
Levi Neuwirth
a230c6fe38