Epistemic Physics: Beliefs Are Relativistic

Field notes

The site uses the transformation vE = 2p − 1 to place probability on a −1 to +1 velocity-like scale, then introduces rapidity as half the log odds so evidence multiplication becomes addition. Its central worked example starts at 75% with a 3:1 ratio and reaches 90% across Bayesian belief, population frequency, and velocity addition. The interactive also exposes support and opposition counts, a Jeffreys prior of n₀ = 1, and six-step navigation through the example.