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 byFactstatisticsClear all

Results

Showing 1 to 6 of 6

NewestMost votedA to Z
Fact

Medical Screening

Testing people without symptoms to detect disease early. It saves lives in specific programmes and causes harm in others, and distinguishing between…

byCapsule
0 votes0 reviews
Aug 5, 2026
Fact

Probability

The mathematics of uncertainty. It assigns numbers between zero and one to events, and its rules are simple enough to state on a page and produce…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

Correlation

A statistical measure of how far two variables move together. It is among the most widely used quantities in research and among the most widely…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

Sampling

Selecting part of a population in order to draw conclusions about the whole. It is what makes measurement of large populations possible, and how the…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

The Normal Distribution

The symmetric bell-shaped probability distribution that arises whenever many small independent influences add together. It is the most important…

byCapsule0 votes0 reviewsAug 5, 2026
Fact

The Census

A count of a population, conducted by a state, at a defined moment. It is among the oldest functions of government and remains the foundation on…

byCapsule0 votes0 reviewsAug 5, 2026