as a skeptic, I also have to look with a critical eye at science and say that it's obvious that what we know now isn't all there is to know, and I suspect there's a lot about how things in the world fit together that we don't yet know about. That said, I'm not convinced that people doing wifty stuff really Know, either, but that's neither here nor there.

This is pretty much how I look at it. Having *been* a scientist, I can say that open-mindedness and true investigative curiosity and technique can be rarer than you think. My immediate reaction to anyone who claims to Know the Truth, be they scientist or pagan, is to want to argue for the other side. I think of my own practice as empirical, I'll try stuff and note the results, then try again and see what aspects can be repeated. There's lots of things I now do that I don't have the rational basis for yet, but that may come in time ... or it may not. :) Not having a theory doesn't change the fact that some things work.