Everyone has limits–I’m talking about cognitive limits: intellectual, perceptual, moral–and very few people can see their own. It’s not a matter of being smarter than someone else, or even more aware, it’s a blind spot that we all have. I can’t see what I can’t see and you can’t see what you can’t see. Only other people can show us where our limits lie, and only other people can take us beyond them. But it’s an unpopular job, a thankless task, a role dangerous to personal and all other relationships: bringing someone’s attention to what they can’t see, and more often than not, don’t want to see.