Being objective as a viewer could entail that vision is a medium to acquire information, simply visual. I think that what we see may as well be flat planes of color and value, as is a painting. Really, the experience is what we are after, so as long as we get the information, its successful.
Our ability to suppress our knowledge of fabrication, façade, and image as a constructed image is fascinating. We really just want to see what we want to believe.
Accumulation of information is another interest of mine, especially in contemporary culture in which we have access to so much information that we have no chance of absorbing it all. I believe this has some powerful effects that should be looked at:
1) Editing: We must choose and direct our path of information acquisition specifically, hence making conscious decision what to learn about and what not to waste time on.
2) Memory: Like editing, we can't remember everything, and eventually lose, misplace, reconstruct, or completely distort memories that store visual and ephemeral information.
3) Generic Knowledge: We are forced to learn the surface of many fields of thought, not able to spend enough time to deeply learn. We become generalists, rarely specifying.
4) Cultural Loss: Eventually, some information is gradually edited out as insignificant in historical terms, due to the need to generalize in our instruction in school. (ie: 70's bands will become more and more obscure, eventually diminishing to a couple famous "definitive" bands of the era)