e is no way to control all of the information, claims, and enticements that reach young people. The best thing to do is arm them with the sword of critical thinking.Maybe Yes, Maybe No is a charming introduction to self-confidence and self-reliance. The book's ten-year-old heroine, Andrea, is always asking questions because she knows "you should prove the truth of a strange story before you believe it.""Check it out. Repeat the experiment. Try to prove it wrong. It has to make sense." writes Barker, as he assures young readers that they are fully capable of figuring out what to believe, and of knowing when there just isn't enough information to decide. "You can do it your own way. If you are a good skeptic you will know how to think for yourself."