Simulations · Probability lab

Monte Carlo Trolley Problem

Learn probability through ethical dilemmas: compare expected value to realized outcomes, then watch cumulative averages converge as rounds add up.

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How it works

  • Do nothing: 5% chance of 0 deaths, 95% of 5 — EV 4.75.
  • Pull lever: 90% of 1 death, 10% of 3 — EV 1.20.
  • Play round-by-round, or auto-run a fixed strategy for many rounds and inspect the convergence chart.

Rounds per session

Strategy