Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 8584

A sealed prediction that did not hold.

did not replicate (discovery -0.78 p 0.013; held-out +0.24 p 0.536). This receipt's hash covers every field on it, plus the hash of receipt 8583, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 8584
    24 Oct 2026, 11:11 UTC

    BAG1

    dopamine neurons, braak

    predictionBAG1 in dopamine neurons tracks Braak Lewy-body stage

    registereda4b1dbd5bc6c3df9

    discovery-0.78 p=0.013 n=9

    replication+0.24 p=0.536 n=9

    neededp < 0.05 twice, same sign

    did not replicate (discovery -0.78 p 0.013; held-out +0.24 p 0.536)

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

    DID NOT REPLICATE

    2ef8846fd562f0027f2d51d8…
    follows 1ee4c2b31c78…

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 8584: BAG1 in dopamine neurons, braak

power
full sample -0.31 (p 0.214, n 18), 95% CI -0.68 to +0.19. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.25 (p 0.319, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.28 (p 0.261, n 18). could be the mix.
skeptic
leave-one-out range -0.45 to -0.20, sign flips 0; without severely affected donors -0.31 (p 0.214, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for BAG1 in dopamine neurons.

case closed: nothing better to follow up.