Version history — Multi-Level KPI Review¶

Current edition: v3 · 2026-09-28 · mechanism

Editions¶

Version	Date	Change	What changed
v3	2026-09-28	The Goodhart (1975) footnote now states the law as Goodhart worded it, 'any observed statistical regularity will tend to collapse once pressure is placed upon it for control purposes', and notes that the familiar 'when a measure becomes a target, it ceases to be a good measure' is Strathern's (1997) later generalization.	prose — body (prose edited)
v2	2026-09-14	The reference registry gained 4,496 links: works whose source a reader had no way to reach now resolve to one, cutting unlinked entries from 22.7% to 7.8%. Of the links shown, 21,659 point at an authoritative source and 6,080 are marked weak — locating the work in a catalogue rather than at its publisher. A sample of 340 was independently re-checked against the linked pages; two were wrong. 548 works also gained a publication type, and several thousand had a title, author list, year or container corrected against the cited work.	prose — body (prose edited)
v1	2026-08-24	First published edition.	first published edition

Editions are cut at publish time from a content hash of the entity's canonical source, so a version changes only when the content actually changed. Full canonical content for every edition, and the exact per-part diffs between them, are in the downloadable editions archive (editions_archive.jsonl); the current-state index is versions.jsonl.