Capsule
DonateLog inCreate account
Menu

Navigation

  • Main page
  • Capsules
  • Learning
  • Mapping
  • Rankings
  • Organizations
  • Create
  • Forums
  • Research

Interaction

  • Messages
  • Verify
  • Help
  • About Capsule

Display

Appearance

Environment

EnvironmentsDefault
Capsule
Log in

Navigation

  • Main page
  • Capsules
  • Learning
  • Mapping
  • Rankings
  • Organizations
  • Create
  • Forums
  • Research

Interaction

  • Messages
  • Verify
  • Feedback
  • Help
  • About Capsule

Truth Classification

  • Fact
  • Theory
  • Hypothesis
  • Proven
  • Contested
  • Debunked
How classification works

Capsule of the Day

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

New in the Library

  • FactTardigrade
  • FactMonarch Butterfly
  • FactSpider

Capsule

© 2026 Solis Holdings Group Inc. All rights reserved.

Built by Solis Dev, a technology studio operating under Solis Holdings Group Inc.

  • Policy
  • Terms of Use
  • Methodology
  • Corrections
  • Non-partisanship
  • Transparency
  • Developers
  • About
  • Discord
  • Sitemap

Capsule, the capsule-pill mark, and the clock logo are trademarks of Solis Holdings Group Inc. All content, source code, and design assets are the exclusive property of Solis Holdings Group Inc., unless otherwise noted. Unauthorized reproduction is prohibited.

The library

Capsules

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

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered bypolicyClear all

Results

Showing 1 to 12 of 12

NewestMost votedA to Z
Fact

Housing

Dwellings and the systems producing and allocating them. Housing is simultaneously shelter, the largest household expense in most countries, and the…

byCapsule
0 votes0 reviews
Aug 5, 2026
Fact

Taxation

Compulsory payments levied by a state on individuals and organisations. It funds government, and its structure determines who bears the cost of…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

Inflation

A sustained rise in the general level of prices, equivalently a fall in the purchasing power of money. It is measured by tracking the cost of a…

byCapsule0 votes0 reviewsAug 5, 2026
Theory

Routine Activity Theory

The proposal that a crime requires three things to converge in space and time: someone motivated to offend, a suitable target, and the absence of…

byCapsule0 votes0 reviewsAug 4, 2026
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…

byCapsule0 votes0 reviewsAug 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
Hypothesis

The Lead-Crime Hypothesis

The proposal that childhood exposure to lead, principally from leaded petrol, raised violent crime rates a generation later, and that removing it is…

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
Theory

Keynesian Economics

Keynesian economics is the body of theory, originating with John Maynard Keynes in the 1930s, holding that total spending in an economy drives output…

byCapsule0 votes0 reviewsAug 2, 2026