And we said, OK, we wanted to model it as a binomial distribution. So if this is a binomial distribution, then this lambda would be equal to the number of trials times the probability of success per trial. And so if we could view a trial as an interval of time, this is the total number of successes in an hour. Success in hour, and so this would be success in an smaller interval, an interval, and this would be the probability of success in that smaller interval. And in the last video, we tried it out. We said, oh, well, what if we make this interval a minute, and this is the probability of success per minute? We'd have maybe a reasonable description of what we're describing, but what if more than one car passes in a minute?