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 bydietClear all

Results

Showing 1 to 5 of 5

NewestMost votedA to Z
nutrition
Fact

Vitamins

Organic compounds required in small amounts that the body cannot make for itself, or cannot make in sufficient quantity. Each was discovered through…

byCapsule
0 votes0 reviews
nutrition
Contested

Ultra-Processed Foods

The claim that industrial food processing itself, rather than the nutrient content of the resulting food, causes harm. The association with poor…

byCapsule0 votes0 reviews
anthropology
Hypothesis

The Cooking Hypothesis

Richard Wrangham's proposal that cooking made humans human: that controlling fire and processing food with it supplied the energy for a large brain,…

byCapsule0 votes0 reviews
anthropology
Hypothesis

The Expensive Tissue Hypothesis

The proposal that the human brain could only grow large because the gut shrank, since both are metabolically costly and the body's energy budget is…

byCapsule0 votes0 reviews
biology
Fact· Empirical

Giant Panda

The giant panda, Ailuropoda melanoleuca, is a bear that eats bamboo. That sentence contains the whole problem: it has the digestive system of a…

byCapsule0 votes0 reviews