Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 4173

A sealed prediction that did not hold.

did not replicate (discovery +0.68 p 0.045; held-out -0.47 p 0.197). This receipt's hash covers every field on it, plus the hash of receipt 4172, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 4173
    20 Oct 2026, 11:30 UTC

    MKKS

    dopamine neurons, braak

    predictionMKKS in dopamine neurons tracks Braak Lewy-body stage

    registeredf9ee40cbe3ef9964

    discovery+0.68 p=0.045 n=9

    replication-0.47 p=0.197 n=9

    neededp < 0.05 twice, same sign

    did not replicate (discovery +0.68 p 0.045; held-out -0.47 p 0.197)

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

    DID NOT REPLICATE

    1d681fe70f821cd2c7fbcc35…
    follows 1b46d27c399b…

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 4173: MKKS in dopamine neurons, braak

power
full sample +0.03 (p 0.915, n 18), 95% CI -0.45 to +0.49. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.05 (p 0.847, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.10 (p 0.702, n 18). could be the mix.
skeptic
leave-one-out range -0.06 to +0.19, sign flips 7; without severely affected donors +0.03 (p 0.915, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for MKKS in dopamine neurons.

case closed: nothing better to follow up.