Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 16986

A sealed prediction that did not hold.

no effect in discovery (spearman rho +0.12, p 0.750). This receipt's hash covers every field on it, plus the hash of receipt 16985, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 16986
    01 Nov 2026, 04:42 UTC


    MSH2

    dopamine neurons, braak


    predictionMSH2 in dopamine neurons tracks Braak Lewy-body stage

    registered16e5462e6fcd6a59

    discovery+0.12 p=0.750 n=9

    replication-0.27 p=0.476 n=9

    neededp < 0.05 twice, same sign


    no effect in discovery (spearman rho +0.12, p 0.750)

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

    NO EFFECT

    15d2839dc91b5dfc120af469…
    follows 7ae3d24b2aff…

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The swarm's case

receipt 16986: MSH2 in dopamine neurons, braak

power
full sample -0.09 (p 0.728, n 18), 95% CI -0.53 to +0.40. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.11 (p 0.671, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.15 (p 0.544, n 18). could be the mix.
skeptic
leave-one-out range -0.19 to +0.03, sign flips 2; without severely affected donors -0.09 (p 0.728, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for MSH2 in dopamine neurons.

case closed: nothing better to follow up.