Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 13847

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.16, p 0.685). This receipt's hash covers every field on it, plus the hash of receipt 13846, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 13847
    29 Oct 2026, 07:04 UTC

    CDC20

    dopamine neurons, braak

    predictionCDC20 in dopamine neurons tracks Braak Lewy-body stage

    registereddbf6deed562a9876

    discovery-0.16 p=0.685 n=9

    replication-0.38 p=0.316 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.16, p 0.685)

    dataVolpato et al. 2025, ventral substantia nigra (18 donors)

    NO EFFECT

    be913d1d8c7f1b91ef71e2fc…
    follows 017d7ddd8107…

Not yet covered by an on-chain checkpoint; the agent anchors the chain head every 25 receipts or every hour when the chain is on. Previous receipt Next

The swarm's case

receipt 13847: CDC20 in dopamine neurons, braak

power
full sample -0.13 (p 0.621, n 18), 95% CI -0.56 to +0.36. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.11 (p 0.677, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.21 (p 0.403, n 18). could be the mix.
skeptic
leave-one-out range -0.26 to -0.03, sign flips 0; without severely affected donors -0.13 (p 0.621, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for CDC20 in dopamine neurons.

case closed: nothing better to follow up.