Laymen looked at people's faces, and that was pretty much it. Artists scanned the whole picture, paying particular attention to patterns and textures. They hardly paid any attention to faces.
This matches my own experience. Most people seem incapable of taking a picture that doesn't have a face in it. I'm always asked how I can take pictures that "look like postcards".
I've been quoting that Eggleston bit too much, but I think it still encapsulates a lot that is true about making photography an art, and builds up on what you just said:
William Eggleston said:I am afraid that there are more people than I can imagine who can go no further than appreciating a picture that is a rectangle with an object in the middle of it, which they can identify.
They don't care what is around the object as long as nothing interferes with the object itself, right in the centre.
Even after the lessons of Winogrand and Friedlander, they don't get it. They respect their work because they are told by respectable institutions that they are important artists, but what they really want to see is a picture with a figure or an object in the middle of it. They want something obvious.
The blindness is apparent when someone lets slip the word 'snapshot'. Ignorance can always be covered by 'snapshot'. The word has never had any meaning. I am at war with the obvious.
Afterward from The Democratic Forest
William Eggleston in Conversation with Mark Holborn