It is a terrible thing for an author to have a lot of people running about his book without any invitation from him at all.
A. A. MilneOwl explained about the Necessary Dorsal Muscles. He had explained this to Pooh and Christopher Robin once before and had been waiting for a chance to do it again, because it is a thing you can easily explain twice before anybody knows what you are talking about.
A. A. Milne