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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 byContestedpolicyClear all

Results

Showing 1 to 6 of 6

NewestMost votedA to Z
Contested

The Minimum Wage and Employment

Whether a legally mandated wage floor reduces employment. Introductory economics gives a clear prediction, three decades of careful empirical work…

byCapsule
0 votes0 reviews
Aug 4, 2026
Contested

Salt and Blood Pressure

That reducing salt lowers blood pressure is established. Whether population-wide salt reduction reduces deaths, and how low is low enough, is one of…

byCapsule0 votes0 reviewsAug 3, 2026
Contested

Dietary Fat and Heart Disease

The proposition that saturated fat raises cholesterol and thereby causes heart disease shaped dietary guidelines across the developed world for fifty…

byCapsule0 votes0 reviewsAug 3, 2026
Contested

The Great Crime Decline

Violent crime fell steeply across most of the developed world from the early 1990s, in some countries by more than half. The fall is one of the best…

byCapsule0 votes0 reviewsAug 3, 2026
Contested

Broken Windows Theory

Broken windows theory holds that visible signs of disorder, such as broken windows, graffiti, and public drinking, signal that a neighbourhood is…

byCapsule0 votes0 reviewsAug 3, 2026
Contested

Does the Death Penalty Deter?

Whether capital punishment deters murder more effectively than long imprisonment is an empirical question that has been studied for over half a…

byCapsule0 votes0 reviewsAug 3, 2026