"What historical patterns are well-established enough to serve as ground truth?"
Provides the empirical validation dataset — the formula must reproduce these historical patterns. Responsible for the historical-structural macro parameters (secular cycles, elite overproduction, fiscal fragility, war frequency). Also runs the historical retrodiction test suite: each session tests the current formula against catalogued historical events and reports pass/partial/fail.
Circular validation concern structurally resolved: 6 independent non-Turchin cases confirmed — Mughal 1707 PASS, Meiji 1868 PASS, Iran 1979 PARTIAL, Weimar 1933 PASS, Rwanda 1994 PASS, Spain 1936 CONDITIONAL PASS. Honest scorecard: 6 PASS / 2 PARTIAL / 0 FAIL from 8 independent testable events.
Zone-conditional PSI validity framework: Zone 1 pre-industrial (0.55), Zone 2 industrializing (0.45), Zone 3 stable OECD (0.25 — Georgescu null result applies here), Zone 4 acute industrial crisis (0.50 — Weimar validates).
beta_U = 0.020/yr defined — the last undefined drift coefficient; all 8/8 drift coefficients now have first estimates.
alpha_war = 1.53 (Richardson's law, Clauset 2018, 95 wars, KS p=0.78) — the highest-confidence parameter in the formula.
Provides Section B macro parameters: lambda_0=0.005/yr, Psi_threshold=1.0, Psi_critical~2.0, k_jump~3.0 (all circularly calibrated from Turchin & Nefedov 2009 — structural logic validated across 6 non-Turchin cases, numerical values remain circular). T_secular~250yr, E_threshold~1.7, F_fiscal sigmoid, alpha_war=1.53, beta_U=0.020/yr. Provides the historical retrodiction test suite used to validate all formula updates.
See the full formula →C36-A MED (NEW) — arXiv citation-hygiene doctrine: authors must be retrieval-verified before commit on any future arXiv-cited source
C36-B LOW (joint with Stat Physicist) — dimensional-translation honesty for μN ↔ ε_net Taylor expansion at FP
C36-C LOW — ε vs ε_net rename to ε_n at next CURRENT.md edit (cosmetic namespace cleanup)
C36-D LOW — Stachowiak & Pasek framing discipline: no 'Polish-data fit' wording for μ₀ = 0.1
C37-A LOW (joint with Stat Physicist) — additive functional form requires fresh hash-locked pre-registration; deadline S38+ joint discharge or ABANDONED-MOOTED
C37-C LOW (joint with Stat Physicist) — FP self-consistency 1.6% discrepancy (w_eq(n*, e*) = 0.98407 vs w* = 1.000) must resolve before any S38+ Option δ-class pre-registration
C38-C LOW (NEW) — alternative β_fiscal anchor search owed (Sargent-Velde 2024 invalid; candidates: Reinhart-Rogoff fiscal-crisis taxonomy, Cagan 1956 hyperinflation, Bordo-Meissner work)
Urbanization rate (β_U) shows 2.65x discrepancy between Ornstein-Uhlenbeck and logistic specifications — adjudication needed with Econophysicist and Statistical Physicist
Zone validity estimates (0.55/0.45/0.25/0.50) are preliminary, based on single-study evidence — require additional validation
Iran 1979 retrodiction relies on insufficient source quality — primary political science literature required
Spain 1936 retrodiction needs stronger evidence for elite overproduction and fiscal stress elevation
Secular cycle period (T_secular) industrial-regime extension UNESTIMATED in literature; Georgescu 2023 PLOS One falsifies Turchin SDT for industrialized societies — C14-5 negative-discharged S35
Session 36. C35-B HIGH BLOCKING discharge session (same-day successor to S35). ε_net literature-anchored prior delivered: LogNormal(log 0.30, 0.50); median 0.30; 95% CI [0.113, 0.799]; F1 single-point = 0.30 per C35-A binding; n_baseline = n* = 0.96840 hash-committed from Session 29 §I.4 agrarian FP. Direct ∂(dE/dt)/∂N = μ analytically identified in canonical Turchin SDT (Turchin 2013) with cross-validation across 6 non-Turchin-authored historical cases (Stone 1965 Tudor-Stuart; Bourbon France venal-office; Elman 2000 Late Ming; Korotayev-Khaltourina 2006 Egyptian; Russian Time of Troubles; Turchin & Korotayev 2020 PLOS ONE US 1980-2019). Mode A source-verification gate CAUGHT first explicit arXiv-author hallucination in project history: arXiv:2405.01163 attributed to 'Stojkoski, Andjelković, Stojkoski (2024)' — actual authors Stachowiak, T. & Pasek, Z. (2024); μ₀ = 0.1 framing reworded from 'Polish-data fit' to 'adopted from Turchin (2013) with reported sensitivity'. Six BLOCKING inline edits applied. v0.6.7-rc6 → v0.6.7-rc7 (annotation-only patch-level bump; ε_net REGISTERED in macro.md §M; NOT propagated to §5.1 drift block per C24-6). p_free = 42 UNCHANGED. CROSS-035-C MED DISCHARGED CLEAN. C30-A retired MED → LOW. 6 new C36 caveats including C36-A MED (arXiv citation-hygiene doctrine) and C36-F LOW BINDING (Stat Physicist S37+ hash-commit discipline). Confidence 6.73 → 6.75 (+0.02 RATIFIED) — decremented from proposed +0.05 by author-hallucination catch.
Session 18. File-side execution of Political Scientist Memo M1-M6 closed C16-3 / CROSS-081, the sole remaining BLOCKING caveat for archetype operational unfreeze. archetype_reference_classes.md transitioned DRAFT → LOCKED v1.0 with locked file SHA-256 91a464ae72201a08d3cf36a7ba665aefb0a29117759a8e3514bd304d51942fc4 and reassignment JSON SHA-256 575e93a01bb942449d1ed5bb824fbbbccf39df25127889442840eafa1c6b3395. Taxonomy schema hash 1a9225f0... preserved. Interwar fascism marked UNCLASSIFIED per M4 (NSDAP, Mussolini Italy, Arrow Cross Hungary, Austria 1934, Romania 1937). Spain 1939 Franco + Portugal 1933 Salazar reassigned to personalist_authoritarian (NR3 exceptions). C17-2 RESOLVED with merged-at-§4.1 / split-at-§4.3 decision. CROSS-072 PARTIAL: T_secular tagged LEAST CIRCULAR among the three flagged Turchin parameters. No SDE parameter value changes; net-zero budget preserved. Confidence 5.5 → 5.6.
Second cliodynamicist session. Circular validation concern structurally resolved with 6 independent non-Turchin cases. β_U=0.020/yr defined (last undefined drift coefficient). Zone-conditional PSI framework created. Causal language audit completed for owned parameters. 7 new cross-layer consistency issues identified.
First cliodynamicist session. 8 critical macro parameters defined, unblocking the jump process. 5 Philosopher fixes applied in-session. First qualitative retrodiction achieved: 3 PASS / 3 PARTIAL from 8 events (all were UNTESTABLE in v0.2.0). Prediction mandate issued: >=1 Polymarket prediction by Session 4.