Scott Alexander, curated
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The Thin Blue Line That Stays Strangely Horizontal

Quality
61
Strong
Claude Shift
40
Moderate
RWI
2
of 10

Summary

Scott tests the Reactionary claim that society drifts inexorably Left, using DW-NOMINATE — the award-winning political-science system that scores every legislator's left-right position across all of US congressional history (intertemporal comparisons validated by its developers and used by Nate Silver). It confirms recent polarization and the GOP's post-1980 rightward turn — but shows ZERO net liberal drift of either party over 120 years, which seems impossible given the welfare state, civil rights, gay marriage, and the income tax all happening. Scott can't reconcile the data with obvious history and honestly concludes 'I'm stumped' (noting Martin-Quinn SCOTUS scores find the same).

Why this score

Quality 61 · Strong. 61 — low/mid-Strong. A short, intellectually-honest puzzle post surfacing a genuinely surprising contradiction (a respected measure shows no left-drift vs the obvious historical record) and admitting it can't resolve it. Brief and inconclusive, which caps it.

Claude’s paradigm shift 40 · Moderate. 40 — Moderate. Raising the DW-NOMINATE-no-drift puzzle is a fresh, interesting observation, but it poses a question rather than advancing a frame.

Real-world impact 2 · Minor. 2 — a within-discourse puzzle post; no material reach.