You have to figure out the area under the curve between two points. So if I wanted to say, let's say this was our distribution. I said, what is the probability that I get 0? I don't know what phenomena this is describing, but that 0 happened. If I say exactly 0, the probability is 0. Because I shouldn't use 0 too much. Because the area under the curve, just under 0, there's no area.