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Problem 5 · Big Five

PARTIAL

S8 tension

What's wrong (standard view): Lensing < Planck prediction. 3+ sigma.

ISST status

Current status: PARTIAL

Psi Jeans cutoff at 69 Mpc naturally suppresses power at sigma_8 scales (8 h^-1 Mpc). Less small-scale power = lower sigma_8 = matches lensing. Direction guaranteed by mechanism. Bare growth also gives sigma_8 = 0.761 independently.

Source

Where this is documented

ISST.md 7.6, 8.2

This is an auto-summary of the canon entry. The full derivation lives in the referenced section of the lab's manuscript and working notes; a hand-enriched page may be added here in a later pass.

What would prove this wrong

Kill conditions

Per-problem kill conditions are recorded with each derivation in the ISST manuscript. The site-wide kill conditions (right-hand sidebar) cover the framework-level commitments that, if violated, would invalidate all DISSOLVED and PARTIAL claims simultaneously.