“It’s high time you were shown that you don’t really know all there is to be known.” ~Dr. Seuss Like most four-year-olds, our young grandson is an expert on a wide range of topics. Whenever we think we’re sharing something new with him, his typical response is, “I already knew that.” It cracks me up every time. I’m also very familiar with the adult know-it-all. You know the type: When you try to share fresh information or introduce an interesting topic, the know-it-all has already been there, seen it, or done that. You can’t possibly show or tell them anything new. And they’re always on the lookout for opportunities to…