pki.sgit.ai / documents / who-pays-for-the-delta

Who Pays For The Delta Nobody Chose, And The Rating That Moves Overnight

TypeStrategy brief — memo 3 of 8 on the insurance pivot Versionv0.33.74 Date30 August 2026 AuthorDinis Cruz (project lead) and collaborators LicenceCC BY 4.0 Sourceraw markdown · view on GitHub

Summary

The accountability question the first two memos deferred, worked through the GitHub example this estate already publishes — and the memo's answer turns out to be a taxonomy rather than a party. A code host offers read-only or read-write and nothing between, so an operator who needs to push at all must confer push to every branch. The operator did not choose that delta and cannot close it: no budget or diligence makes a platform offer a finer grain. So the delta divides by WHO COULD HAVE CLOSED IT — elective (the operator conferred more than needed or skipped an available control: theirs, and the part effort moves), structural (the platform's finest grain is coarser than the mandate: the platform's, or nobody's, identical in every customer's estate at once), and defect (a vulnerability temporarily widens the grant past its documented shape: the platform's, and temporary). A rating that does not separate these is unfair and useless in one move. Three more: platform granularity is a LIBRARY artefact — a fact about the platform, measured once, referenced by all, and the only genuinely public-good part of this apparatus; the rating is a function of the world as well as the placement, because a zero-day does not change the twin, it changes what the twin's reach is worth, so twin and world carry independent freshness; and the memo's '10x' is declined as false precision, because magnitude needs loss data nobody has while direction and mechanism are computable today. Also: checking the memo against the published twin found a defect in the estate's own instrument — measure.py does not measure commit authorship, which a push credential confers absent signed commits.

Key concepts

Key ideas

On this site

Adds insurance doctrine 03; proposes GM-D45 (delta by who could close it), GM-D46 (platform granularity as a library artefact), GM-D47 (the world as a rating input), GM-D48 (direction not magnitude), GM-D49 (a rating may emit a revocation) and GM-D50 (measure.py gains a commit-authorship node); comms T37 and N19.

Read the document

📄 Original document · v0.33.74 · 30 August 2026 · rendered from the raw markdown (the source of truth)