And these, well, I was going to say that they tend to be integers, but they don't always have to be integers. You have discrete random, and so finite meaning you can't have an infinite number of values for a discrete random variable. Well, then we have the continuous, which can take on an infinite number. And the example I gave for continuous is, let's say, random variable X. And people do tend to use, let me change it a little bit, just so you can see, it can be something other than an X. Let's say I have the random variable capital Y. They do tend to be capital letters.