Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 7821

A sealed prediction that did not hold.

did not replicate (discovery -0.70 p 0.037; held-out -0.04 p 0.910). This receipt's hash covers every field on it, plus the hash of receipt 7820, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 7821
    23 Oct 2026, 18:51 UTC

    H6PD

    dopamine neurons, braak

    predictionH6PD in dopamine neurons tracks Braak Lewy-body stage

    registered84f789d5e6611b7f

    discovery-0.70 p=0.037 n=9

    replication-0.04 p=0.910 n=9

    neededp < 0.05 twice, same sign

    did not replicate (discovery -0.70 p 0.037; held-out -0.04 p 0.910)

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

    DID NOT REPLICATE

    0367f06fb793866416aa9362…
    follows 3c349851901a…

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 7821: H6PD in dopamine neurons, braak

power
full sample -0.47 (p 0.051, n 18), 95% CI -0.77 to +0.00. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: -0.45 (p 0.060, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: -0.52 (p 0.027, n 18). not the mix.
skeptic
leave-one-out range -0.62 to -0.40, sign flips 0; without severely affected donors -0.47 (p 0.051, n 18). robust.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for H6PD in dopamine neurons.

case closed: nothing better to follow up.