One of the things that's always been appealing to me is to find conflicting points of view and figure out how to reconcile those. And the proxemic literature offered that possibility of thinking about alternative points of view because the literature does two things. It indicates, for instance, that people move closer to those whom they like, and to whom they want to create some relationship. So closer is better. On the other hand, there's a body of literature that says closer is threatening, and that people will seek greater distance as protection for themselves. So the question is, is closer better or farther better, and when? And that really led to the theory. It was very simple. It appeals to a lot of people because it makes sense. It fits with our lived experience, that we want to move closer to those whom we like, with whom we want to affiliate, and whose approval we seek. And on the other end of it, we want to avoid situations that we see as possibly threatening. So the question becomes, is the key in the behavior itself or something else? And as a person coming out of a communication background, I assumed there had to be some meaning in the behavior itself. And that was the proxemic move. So it depended on the message coming out of the proxemic signal but also who was sending the signal. We as communication people do think that the source matters. And that's one of the things that Jim McCroskey did encourage us, to think back to the beginning of communication and the whole issue of what counts as source credibility or ethos. So if you put those two together, it really matters who is sending the message. And if it's somebody who is what we call rewarding, then that person sending that signal probably is using it, or you're interpreting it, as an invitation. Whereas if it's coming from somebody who is higher in, for instance, positions of power, then the signal of proximity actually can be a threat. So that's how we came to putting together these concepts. I get a lot of letters from students saying they really like this theory and they're pursuing this theory in their class. So I think it had some legs.