“All you see, is all there is.” — Daniel Kahneman
This maxim is as epistemologically true to people as it is psychologically; to wit, what cannot be seen—or sensed—cannot be understood. Lacking any reason to extrapolate, we take what we see at face-value.
This is the fundamental act of photography. As an act of isolation, the aesthetic response reacts only to and within the bounds provided by the object—the subject is unconcerned with all else, for it cannot be sensed.