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DebunkedThe PolygraphThe instrument popularly called a lie detector, which records breathing, blood pressure, pulse and skin conductance dur…

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The library

Capsules

1,028 capsules, each one classified by the strength of its evidence.

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered byProvenperceptionClear all

Results

Showing 1 to 3 of 3

NewestMost votedA to Z
Proven

Colour Vision

Colour is not a property of light. It is what the visual system computes from the responses of three receptor types, and the computation is what…

byCapsule
0 votes0 reviews
Aug 3, 2026
Proven

The McGurk Effect

Watch a face saying one syllable while hearing another, and you perceive a third that was never present in either. Speech perception turns out to be…

byCapsule0 votes0 reviewsAug 3, 2026
Proven

The Kuleshov Effect

Two shots placed next to each other produce a meaning that neither contains. Lev Kuleshov demonstrated it around 1918, and it is the reason film…

byCapsule0 votes0 reviewsAug 3, 2026