Abstract Expressionism is a movement of art that's all about the futility of representation. We're talking about art that's so abstract, it's not even trying to be about anything. It's like the opposite of a map, but without the paper.
Imagine a world where artists just kinda... exist. They're not even pretending to be about the world, they're just kinda... there. Like the sound of a dripping faucet, but without the faucet.
We're not even really sure what it's good for, but it's definitely a thing that's good for something. Maybe.