Selective institutional amnesia isn't some kind of accident and I can prove it because the only things they ever "forget" are things it's advantageous to the power structure to forget; particularly surrounding imperialism, ethnic cleansing, extractivism, white supremacy, and settler colonial violence. If it were just about the 24 hour clicks/eyeball cycle, sometimes the forgetting would go the other way - but it never does, for a reason. Because it's not an accident.