Rule of law as institutional substrate — contract enforcement, judicial independence, equal treatment before the law. Upstream of most other axes.
Loi n° 75-17 du 17 janvier 1975 relative à l'interruption volontaire de grossesse legalised abortion up to 10 weeks (later 12). Landmark social-liberal reform of Giscard presidency. Initially voted for five-year trial period; made permanent 1979. Did not affect economic axes directly but anchors the social-liberal content in the Giscard movement.
Per invariant 3, reforms are scored by what they did on each channel-separated axis, not by the party that enacted them. This fingerprint is how the policy-match engine finds historical analogues.
Explicit links are curated by the author. Inferred links are hypotheses in the library that test the same axes this policy moved — the framework's answer to "what does the data say about a policy like this?".
Ranked by axis-fingerprint overlap with this policy. Direction match bolded — those are the closest historical analogues. Shape of the match is what drives policy-outcome comparison, not the country or party label.