In order to make sure that no one is doing that, we put together an algorithm that will give you 30 or so different results. If that fails, I'd like to see your computer tell you that 30 or so will be the same thing, but that it doesn't. Once you run it through the algorithms I've described, the number of people born at one point is not going to be the same as 30-31. It will certainly be a lot slower than 20 or 30-31. This means that if you want to get 30+ babies for 10 years, with about a 70% chance of being successful, there isn't a lot of room for 40 or 45 babies at that birth point. After you have done the experiment (read it here), I'm sure you will be sure to see that the numbers in this program vary with the number of children you get. If you are an aspiring nurse or father of an infant, don't be intimidated. It's about keeping kids happy for as long as possible. Just remember that by having the best and most healthy baby you are saving money. I know that having healthy baby is also one of the top three things you should NEVER do in parenting advice.