Let's let random variable Z be the number of ants born tomorrow in the universe. Now, you're probably arguing that there aren't ants on other planets, or maybe they're ant-like creatures, but they're not going to be ants as we define them, but how do we know? The number of ants born in the universe, maybe some ants have figured out interstellar travel of some kind. The number of ants born tomorrow in the universe, that's my random variable Z. Is this a discrete random variable or a continuous random variable? Once again, we can count the number of values this could take on. This could be 1, it could be 2, it could be 3, it could be 4, it could be 5 quadrillion ants, it could be 5 quadrillion and 1.