In plain words: the careful sibling met exactly the fate we pre-registered as decisive โ and failed harder than its brother. Its job would be to rank features by how much their causal wiring changes between regimes; turn its sensitivity dial between two perfectly reasonable settings on identical data, and that ranking survives only 39% intact (its brother managed 62.5%; our bar is 90%). The extra machinery that makes it honest about hidden puppeteers โ deciding which way each connection points under uncertainty โ turns out to AMPLIFY the dial's influence rather than tame it. That makes the lesson a family law, measured twice: on this market, wiring-map rankings from this school of methods are threshold-brittle at scale, and acing the entrance exam predicts nothing about it (both siblings went twelve-for-twelve before dying at the same gate). The repair path is on record for both: versions where the dial tunes itself. Next in the queue: a completely different school โ a map-drawer built as a deterministic optimizer with NO sensitivity dial at all, which is precisely the property this family lacked.
Preflight (A0): 2026-07-10 05:25 โ load1 2.72/32c falling (โค24) ยท no heavy jobs ยท 28 GiB avail, si trickle/so=0 ยท CH + sidecar + kintsugi active โ ALL PASS. Sync: origin/main unchanged. One capped run, 4.9 min, readonly=2 loader, watchdog clean, resume grid saved, real rows only.
Census results (pre-registered rule in lpcmci_m3_census.py โ row-58 design, honest sibling comparison)
Check
Reading
Ruling
The DECISIVE ฮฑ check
struct_instab (the role readout) dial correlation = 0.393 โ (bar 0.90; sibling PCMCI+ read 0.625, row 58) โ the PAG orientation phase AMPLIFIES threshold brittleness. link_rate: 0.957 โ (not the role readout)
RULE 1 FIRES โ the sibling's fate
Degeneracy / redundancy (recorded)
Not degenerate (struct_instab q10/50/90 = 0 / 0.43 / 0.72); not redundant (worst |ฯ| = 0.695 vs HSIC-X min_p)
kill is the dial alone
Verdict (row 66)
EXCLUDE(ฮฑ-fragile at census scale โ 0.393 < 0.90 on identical rows; row-58 precedent applied as pre-registered) โ BONEYARD, re-proposal only with the dial derived away
THE FAMILY LAW (constraint-based causal discovery on this substrate), MEASURED TWICE:
entrance exam census ฮฑ check (role readout)
PCMCI+ 12/12 PASS โโโโบ 0.625 โ (row 58)
LPCMCI 12/12 PASS โโโโบ 0.393 โ (row 66 โ orientation phase amplifies)
โ exam-scale dial invariance certifies NOTHING about census-scale dial stability
โ wiring-map rankings from this school are threshold-brittle at scale here
โ repair path (both): the dial must tune itself (pc_alpha=None / ฮฑ-integrated readouts)
โถ Next iteration
Next firing: B-03 advances to H-030 DYNOTEARS (causalnex โ SVAR-structure drift across regime slices) โ entrance exam on the twin anchor. Its structural difference from the fallen family is exactly the point: a deterministic optimizer with no ฮฑ dial by construction; its dossier flag is instead M1-borderline (a block-bootstrap trust anchor must be wired). Check FOSS availability/license first (causalnex); exam form per the standing pattern with dials-audit and the F014 trap. Standing for the operator: the 73 cycle-1 draft statuses (iters 11/13), the Frontier #4 precondition review, the ripening STABLE-declaration proposal, and PR #599 carrying 11 ADMITs + 11 kills of campaign work.