As with the other Sophie books, this one deals with one those struggles every child faces at some time or another; in this case, the frustration of facing a challenge when something doesn’t come easy, and working past, “I can’t.”  It teaches kids that we grow our brains by exercising them, and that the power of the word, “yet,” lies in the reminder that what we can’t do now we can learn to do by sticking with the challenges until we can.