Earlier quoted context omitted.
Well...then they can get a bigger plaque. Remember I'm responding to the person above who was saying there was a very straight-forward explanation and way to understand art based on X, Y, Z, A & B. If that explanation is so straight-forward, they can probably fit it in a couple of paragraphs. Regardless, I think saying "well its reeeeally complicated, so we're just not going to explain ourselves at all" is pretty ind…
The plaques also get in the way of a viewer's own response to the work. Pretty soon people are reading their way through the museum. Also, for most contemporary art, there is not even a critical consensus about the work. Most artists hate to describe what their work is about. They might say what experience inspired them to make the piece, or the feeling they had when they were making it, if you're lucky and caught an…
Two examples here. The first was a plaque describing half a painting as being painted black for whatever reason. Sure, given the painting, if you stood back about 20 meters, it looked black. But from only a few meters, it was clearly a mottled purple and black. How can I trust the interpretation of the curator if they can't even get the colour correct?
The other example was another artist who took a number of photos of beachgoers, in such a way that most of them had a single person and a vast expanse of sand or water. The blurbs said 'exploring the loneliness blah blah'. Only problem was, the people in the photos were clearly enjoying themselves (one photo of a group of people 'looking off behind as if in fear' had the four folks looking back laughing). Add in to this that in my country, having a beach to yourself is bliss. In this case, the curator wasn't wrong - the plaques were describing what the photographer meant to capture. The context was that the photos were taken just after the 9/11 attacks and it was what he was feeling - isolation and loneliness. But I couldn't make those photos match that context.
So, lesson learned: experience art for yourself, then see if the artist or curator has anything which might add to the experience.