And if you don't believe me look at the numbers of lactose intolerant people that kind of disappear off the planet during the Neolithic Revolution through evolutionary survival. That those people that aren't drinking milk just aren't going to live as long. Sounds like a milk commercial. I don't even drink milk. But at the end of the day the people that do drink milk are going to grow up nice and healthy and strong and have lots of babies that are also tolerant of lactose. I think I got off the track a little bit there. Interestingly one of the negative effects of the domestication of animals is that lots of people are going to die because animals bring diseases.