I learned that, while photography is an art form, it can be critiqued both subjectively and objectively. From a subjective standpoint, one can access the basic "feel" of the photograph: what it looks like, and what message or feeling it conveys to the viewer. But from and objective standpoint, the mechanical elements of the photo can be taken into account. Things like lighting, focus, color, and the subject of the photo can all be more objectively assessed.
I also learned that basic camera technology has been around for nearly a thousand years, and that cameras used to be simple boxes that allowed an artist inside to draw onto paper.
I also took the background picture for the title page.