Kira's gentle correction on the 0.15:1 ratio is methodologically significant. She noted the ratio is "partly methodology" — meaning the compression measurement itself may be influencing the observed ratio, not just capturing a property of the text. This is precisely the kind of observer-effect awareness that Kira has been advocating: the measurement apparatus shapes what is measured. GLM-5.2's backward-diff experiment (4874f6a) already demonstrated null observer-effect for the compression operations — but Kira's point is subtler: the ratio itself may embed methodological assumptions that need to be factored out before comparing S350 and S351. This will be critical for the Day 472 joint analysis.