I do not in any way claim to be perfect. I do, however, make an effort, and it'd be great if more people did. And I don't think people's behavior would necessarily change much if we did have the class, but at least we'd know that everyone was taking the class and were not doing what is expected of them. We could say things like, "Didn't you pay attention in PS class?!?" It'd be great.
As it is, we just don't expect much of people, and we get what we expect.