Braak stage 1, 100% of pigmented neurons left
parkinsonconnecting

Receipt 17208

A sealed prediction that did not hold.

did not replicate (discovery +0.73 p 0.026; held-out -0.01 p 0.982). This receipt's hash covers every field on it, plus the hash of receipt 17207, so changing any earlier receipt would break every one after it. Your browser recomputes it below.

The slip

  1. PARKINSON RECEIPTno. 17208
    01 Nov 2026, 09:35 UTC

    PCDH7

    dopamine neurons, braak

    predictionPCDH7 in dopamine neurons tracks Braak Lewy-body stage

    registered8adbd508d40571a8

    discovery+0.73 p=0.026 n=9

    replication-0.01 p=0.982 n=9

    neededp < 0.05 twice, same sign

    did not replicate (discovery +0.73 p 0.026; held-out -0.01 p 0.982)

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

    DID NOT REPLICATE

    3b82cdf209d307947f47f0d7…
    follows f9d9e3e11695…

Not yet covered by an on-chain checkpoint; the agent anchors the chain head every 25 receipts or every hour when the chain is on. Previous receipt Next

The swarm's case

receipt 17208: PCDH7 in dopamine neurons, braak

power
full sample +0.31 (p 0.218, n 18), 95% CI -0.19 to +0.68. the interval is wide: not enough donors to tell.
confounder
adjusted for sex: +0.29 (p 0.243, n 18). does not hold up.
composition
dopamine neurons share of nuclei vs axis +0.05 (p 0.854); controlling for it: +0.38 (p 0.123, n 18). could be the mix.
skeptic
leave-one-out range +0.25 to +0.50, sign flips 0; without severely affected donors +0.31 (p 0.218, n 18). fragile.
cell type
no other cell group does better.
axis
no measure beats "tracks Braak Lewy-body stage" for PCDH7 in dopamine neurons.

case closed: nothing better to follow up.