“This whole business of statistical sampling and the determining of the properties of people by this manner is a very serious business altogether. It’s coming into its own, but it’s used very often, and we have to be very, very careful with it. It’s used for choice of personnel—by giving examinations to people—marriage counseling, and things of this kind. It’s used to determine whether people get into college, in a way that I am not in favor of, but I will leave my arguments on this. I will address them to the people who decide who gets into Caltech. And after I have had my arguments, I will come back and tell you something about it. But this has one serious feature, among others, aside from the difficulties of sampling.”