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Truth Classification

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Theory
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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.

All1,028 Fact599 Proven130 Theory89 Hypothesis71 Contested90 Debunked48

geography236 biology88 physics67 history54 medicine45 astronomy33 psychology26 mathematics26 chemistry20 engineering20 astrophysics19 neuroscience19 anthropology18 art18

Filtered byTheory mathematics Clear all

Results

Showing 1 to 11 of 11

Newest Most voted A to Z

Control Theory

The mathematics of making a system behave as intended by measuring what it is doing and acting on the difference from what is wanted. It is the…

0 votes0 reviews

Aug 4, 2026

Queueing Theory

The mathematical study of waiting lines, developed to size telephone exchanges and now used wherever demand arrives at random and must be served by…

byCapsule0 votes0 reviewsAug 4, 2026

The Basic Reproduction Number

R nought is the average number of people one infectious person infects in a population with no immunity and no countermeasures. It is the single most…

byCapsule0 votes0 reviewsAug 3, 2026

Equal Temperament

Every note on a modern piano is slightly out of tune, deliberately and by a known amount. Equal temperament divides the octave into twelve identical…

byCapsule0 votes0 reviewsAug 3, 2026

Topology

Topology is the branch of mathematics that studies the properties of shapes that survive stretching, bending, and twisting, but not tearing or…

byCapsule0 votes0 reviewsJun 12, 2026

Set Theory

Set theory is the branch of mathematics that studies collections of objects, called sets. Though it begins with an idea as simple as grouping things…

byCapsule0 votes0 reviewsJun 12, 2026

Graph Theory

Graph theory is the branch of mathematics that studies networks of connected objects. A graph is simply a collection of points, called vertices,…

byCapsule0 votes0 reviewsJun 12, 2026

The Theory of Computation

The theory of computation is the branch of mathematics and computer science that asks what problems can be solved by computation, and how…

byCapsule0 votes0 reviewsJun 12, 2026

Theory· Mathematical

Information Theory

Information theory is the mathematical study of how information is measured, stored, and communicated. It defines what information actually is in…

byCapsule0 votes0 reviewsFeb 20, 2026

Theory· Mathematical

Chaos Theory

Chaos theory is the branch of mathematics that studies systems whose behaviour is exquisitely sensitive to their starting conditions. Such systems…

byCapsule0 votes0 reviewsFeb 17, 2026

Theory· Mathematical

Game Theory

Game theory is the mathematical study of strategic decision making, where the outcome for each participant depends not only on their own choice but…

byCapsule0 votes0 reviewsFeb 12, 2026