Probability of success explorer

Comparing independent (geometric) trials vs Bayesian learning across repeated attempts. Adjust parameters to see how the models diverge.

1%
458
0.05
50%
Trials for 99% success (independent)
Trials for 99% success (Bayesian)
P(success) at N trials
P(≥1 success in n trials) = 1 − (1−p₀)ⁿ

How the models work

Independent (geometric)

Each trial is identical. P(fail all n) = (1−p)ⁿ. Requires log(1−τ)/log(1−p) trials to hit threshold τ. Assumes no learning — every attempt starts from zero.

Bayesian learning

Each failure raises p_t toward p_max at rate α. P(fail through n) = ∏(1−p_t). You need fewer trials because you're getting better — but only if α > 0 and learning is real.