I think that is very difficult. You see, at that time, one realized that in a way it was opening up a new world, but certainly very few people realized even some of the simple consequences. I certainly didn't at the time. I'm also quite sure that some of the simple consequences weren't realized by Rutherford, for instance, the displacement theory, or whatever it was called at the time. I've talked about these things with other people, particularly with Niels Bohr, and my feeling is that there was only one man who did understand it. And that was Niels Bohr, who really saw that things were going to be quite quite different, and that some things were completely simple. In fact, he would say they're so simple they weren't worth mentioning.