Quite often, when visitors to the gallery are deciding on a purchase, they are attracted at first to a particular photograph but then feel the need to view more of them before circling back to their original selection. What's interesting is that, when they then seek to describe why they came back to their original choice, words fail them — they can't articulate specific reasons – they just do.
I came across a quote by author Steven King, about the subtle art of the opening sentence, that helps explain why gallery customers may have such trouble talking about their choice:
"To get scientific about it is a little like trying to catch moonbeams in a jar."