Progressivity of the personal income tax schedule, including top marginal rates, bracket spread, and targeted credits (EITC-equivalents).
General government spending as share of GDP, excluding transfers already captured under fiscal.transfer_expansion to avoid double-counting.
Chancellor Kwasi Kwarteng's "Growth Plan" of 23 September 2022, presented without OBR forecast, announced the largest unfunded UK tax cuts since 1972: abolition of the 45p additional rate, reversal of planned corporation-tax rise, scrapping of the dividend-tax surcharge, and an Energy Price Guarantee. Gilt yields and sterling spiked, the Bank intervened in long-dated gilt markets to defuse LDI-driven contagion, and most measures were reversed within weeks under successor Jeremy Hunt.
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.