Moiré. That's what I thought about when I saw this background image. In lay terms, moiré is a silky fabric with a rippled appearance. I was thinking of it in the photographic sense. When a scene has a definite, angular pattern, moiré results from the camera's inability to resolve the pattern. Lines become a series of jagged edges; ripples. Photographers hate it and Photoshop(R) can't fix it.
In fiction, bad writing is like moiré. It distracts the reader from the story and the writer loses the opportunity to present her wonderful idea to an audience--because they stop reading.