Well, Heini Hediger had, one of Heini Hediger’s special interests was relationship between animals and humans. That was one of his focal scientific interests. And of course, in a circus, this relationship between, especially big cats and humans, is very critical. And you can observe a lot of things, like the critical distance. If you approach too close and the animal attacks in self-defense. And so Heini was never, ever very much interested in general, undisturbed behavior of a species. But he was interested to research on the individual behavior of individual specimens to humans. And, therefore, I think he decided to do research in circus.