He could have sampled five duckies and if he just happened to get one of the defective ones, he would have said, oh, maybe 20% are defective. What he's really gotta do is sample, take a larger sample. And once again, whenever you're sampling, there's always a probability that your estimate is going to be not close or definitely not the same as the parameter for the population. But the larger your sample, the higher probability that your estimate is close to the actual parameter for the population. And 10 in this is just too low. In future videos, we'll talk about how you can estimate the probability or how you can figure out whether your sample seems sufficient. But for this one, for what Roy did, I don't think 10 duckies is enough.