Week 45 Day 1: Monte Carlo Simulation: Running Your Retirement 10,000 Times

A Monte Carlo simulation takes your retirement plan and runs it through 10,000 different random market scenarios. Some simulate crashes at the start, some in the middle, some never. The result: a probability of success. If 8,500 out of 10,000 simulations end with money remaining, your plan has an 85% success rate.