But even if this was a function, if it was kind of a wacky function, it would still apply. That when you're calculating the area under the curve of the velocity function, you are actually figuring out the change in position. These are the two things. Well, we already know what could we do to get the exact area under the curve or to get the exact change in position. Well, we just have a ton of rectangles. We take the limit as the number of rectangles we have approaches infinity. We take the limit as n approaches infinity.