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Capsule of the Day

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

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  • FactTardigrade
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The library

Capsules

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

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered byProvencomputer-scienceClear all

Results

Showing 1 to 3 of 3

NewestMost votedA to Z
Proven

Error-Correcting Codes

Adding structured redundancy to a message so that errors introduced in storage or transmission can be detected and repaired without asking for a…

byCapsule
0 votes0 reviews
Aug 3, 2026
Proven· Mathematical Proof

Public-Key Cryptography

Public-key cryptography is the method that allows two parties who have never met, and who are communicating over a channel anyone can read, to…

byCapsule0 votes0 reviewsAug 2, 2026
Proven· Mathematical Proof

The Halting Problem

The halting problem asks whether it is possible to write a program that can examine any other program, together with its input, and reliably decide…

byCapsule0 votes0 reviewsAug 2, 2026