But the question you need to ask yourself is whether that is practical. Because you have on the order, let's see, there's about 300 million people in the United States, roughly half of them will be men, or at least they'll be male. And so you will have 150 million, roughly 150 million men in the United States. So if you wanted the true mean height of all of the men in the United States, you would have to somehow survey, or not even, you would have to be able to go and measure all 150 million men. And even if you did try to do that, by the time you're done, many of them might have passed away, the new men will have been born, and so your data will go stale immediately. So it is seemingly impossible, or almost impossible to get the exact height of every man in the United States in a snapshot of time. And so instead, what you do is say, well look, okay, I can't get every man, but maybe I can take a sample, I could take a sample of the men in the United States, and I'm going to make an effort, I'm gonna make an effort that it's a random sample.