Now that is reasonable in a lot of situations, but sometimes, let's say you're conducting a survey of people exiting a mall, and in that case, and let's say you're saying whether they have done their taxes already, if they're exiting the mall, it's hard to do these samples with replacement. They're leaving the mall. You can't say, hey, hey, wait, I just asked you a question. Now you've answered it. Now go back into the mall because I want each trial to be truly independent. But we all know it feels intuitive that, hey, if there are 10,000 people in the mall and I'm going to sample 10 of them, does it really matter that it's truly independent? Doesn't it matter that we're just kind of close to being independent?