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Capsule of the Day

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

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  • FactTardigrade
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The library

Capsules

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

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered bymemoryClear all

Results

Showing 1 to 2 of 2

NewestMost votedA to Z
Fact

Oral Tradition

The transmission of knowledge, history and literature by speech across generations, without writing. It sustained every human society before writing…

byCapsule
0 votes0 reviews
Aug 5, 2026
Proven

Long-Term Potentiation

A brief burst of activity at a synapse can strengthen it for hours, days or longer. It is the best-supported cellular mechanism for learning, it was…

byCapsule0 votes0 reviewsAug 3, 2026