Sensitivity analysis is like putting a magnifying glass over certain parts of a math problem. Imagine that you have a math problem with lots of numbers in it. When you do a sensitivity analysis, you look closely at each number to see how it affects the answer. For example, if you change one of the numbers, what happens to the answer? Does it change a lot? A little? Or stay the same? Sensitivity analysis helps you figure out which numbers in the problem are the most important, so you can focus more on them and make sure they are right.