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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 byContesteddevelopmentClear all

Results

Showing 1 to 2 of 2

NewestMost votedA to Z
Contested

The Green Revolution

Between the 1950s and the 1980s, new crop varieties and the inputs they required roughly tripled cereal production across much of Asia and Latin…

byCapsule
0 votes0 reviews
Aug 3, 2026
Contested

The Critical Period Hypothesis

The critical period hypothesis holds that there is a window early in life during which language is acquired readily and after which full acquisition…

byCapsule0 votes0 reviewsAug 3, 2026