Retirement planning tools are incredibly helpful, until they’re not. Various tools can offer insight into your financial future, but none of them tells the whole story on their own. To make informed retirement decisions, you need more than just a number or a percentage. You need to understand how these tools work, what they assume, and, most importantly, what they don’t tell you. 

Monte Carlo Simulations: Great at “What Ifs,” But Light on Context 

Monte Carlo simulations are among the most commonly used retirement planning tools in practice. They simulate thousands of possible market scenarios based on your inputs (i.e., expected returns, volatility, spending needs, and how long you want your plan to last), and the end result is a probability of success. If 900 out of 1,000 scenarios show you having money left at the end of your plan, that’s