Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 8713

A sealed prediction that did not hold.

no effect in discovery (spearman rho -0.56, p 0.114). This receipt's hash covers every field on it, plus the hash of receipt 8712, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 8713
    24 Oct 2026, 14:10 UTC

    PRF1

    dopamine neurons, braak

    predictionPRF1 in dopamine neurons tracks Braak Lewy-body stage

    registered46e5c576f15091e5

    discovery-0.56 p=0.114 n=9

    replication-0.19 p=0.618 n=9

    neededp < 0.05 twice, same sign

    no effect in discovery (spearman rho -0.56, p 0.114)

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

    NO EFFECT

    8b532c9684084bb3a76790af…
    follows f010033531eb…

Covered by the on-chain checkpoint of receipt 10865 (2026-10-26 13:05 UTC). See the checkpoint on Robinhood Chain. Previous receipt Next

The swarm's case

receipt 8713: PRF1 in dopamine neurons, braak

power
full sample -0.35 (p 0.153, n 18), 95% CI -0.70 to +0.14. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.31 (p 0.218, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.49 (p 0.041, n 18). not the mix.
skeptic
leave-one-out range -0.49 to -0.26, sign flips 0; without severely affected donors -0.35 (p 0.153, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for PRF1 in dopamine neurons.

case closed: nothing better to follow up.