Part 5/11:
A Monte Carlo simulation analyzing a hypothetical investment scenario reveals staggering variances, particularly over longer periods. The results indicate that, even when contributions are made consistently, the final account balance is not guaranteed, and there remains a 40% chance that the return over a 30-year period could fall below 5%. This demonstrates the high stakes of mismanaging expectations, particularly for new investors who might suffer adverse financial behaviors if they encounter lower-than-expected returns.