I try to explain how I think of them in terms of behaviors and motivations for behavior, and how to identify them, but then people keep saying I'm being too general and saying it could just as easily be something else, not everyone is like that, yada yada yada.
If you can't categorize things according to letters and CF's, then what's the point? There is no system apart from that, and it doesn't in any way translate into anything outside of your head if you can't make generalizations which are observable. Either people of a certain type behave a certain way or they don't, and in the latter case, the system is worthless. And as far as processing information goes, there has to be some way of knowing how someone processes information.