I think the other part of my question that I may not have put across so plainly was that I was curious to know whether exposure to theories of aesthetics, sociology of art, cultural critique, etc, which all dissect and turn inside out works of art, have had any influence on your work.
For example, one of my former roommates did his BFA and MFA in photography, and they are always describing their artistic project in terms that are more often seen in academic papers: the gaze, the mirror, Lacanian psychoanalytics, Barthesian semiotics, and many other things that I actually dispute in parts or in totality. Mind you, I really like his work, and find that in fact it's his references to other works of art, not theory that makes his photos interesting (lots of Goya, Beckett, Jeff Wall, etc).
It's a weird byproduct of the academicization of art grants: they are judged by professors and scholars, so the artist talk the talk.
I study a good deal of aesthetics for my MA, and have wondered often whether this has anything to do with the practice of photography. I find it useful to elucidate, post-facto, what is going on in a photo, but so far I don't see it as a justification, or a motivation for, the creation of actual work, the way artists like my former roomate did. Cartier-Bresson said something similar about rules of composition: it's something you discover after you take the photo, not a mask you put on your viewfinder.
So far, what influences me is rather the other work in photography and visual arts I have seen. It's what helps me to give form and shape, to guide what I do.