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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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The library

Capsules

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

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered byContestedanthropologyClear all

Results

Showing 1 to 3 of 3

NewestMost votedA to Z
Contested

The Homo Naledi Burial Claim

The claim that Homo naledi, a small-brained hominin, deliberately buried its dead in a South African cave system, and made engravings and used fire…

byCapsule
0 votes0 reviews
Aug 4, 2026
Contested

Dunbar's Number

Dunbar's number is the proposal that humans can maintain roughly 150 stable social relationships, and that the limit is set by the size of the brain.…

byCapsule0 votes0 reviewsAug 3, 2026
Contested

Cultural Relativism

Cultural relativism is the principle that a culture should be understood on its own terms rather than judged against the standards of another. It…

byCapsule0 votes0 reviewsAug 3, 2026