Well, there is no width. We're just at a single point. We're not going from c to c plus some delta x, or c plus some even very small change in x, or some other, or c plus some other very small value. We're just saying at the point c. So we really, when we're thinking about area, we're thinking about a, we're thinking about things, we're thinking about how much two-dimensional space you're taking up. But this idea, this is just a one-dimensional, this is just a one-dimensional, I guess you could think of it as a line segment. What's the area of a line segment? Well, a line segment has no area.