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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.

All1,028 Fact599 Proven130 Theory89 Hypothesis71 Contested90 Debunked48

geography236 biology88 physics67 history54 medicine45 astronomy33 psychology26 mathematics26 chemistry20 engineering20 astrophysics19 neuroscience19 anthropology18 art18

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Newest Most voted A to Z

Fact

Musical Notation

Systems for writing down music so that it can be preserved and performed by people who never heard it. Notation determines what a musical culture can…

byCapsule

0 votes0 reviews

Aug 5, 2026

Fact

Zero

The number representing nothing, and the symbol that makes positional notation possible. It arrived late, was resisted, and is the single most…

byCapsule0 votes0 reviewsAug 5, 2026