Questions and answers of children never cease to amaze us. This book explores beyond those questions. What makes it possible for them to think that way?, what happens in their mind that takes them along those paths?, why do their questions flow as they do?. The children in this book answered questions and gave answers without reluctance or effort, they did it with pleasure and naturally. In this book, we want to show the obvious, that for the same reason, is unlikely to see—that many of the questions or statements are of a depth that leads us to ask what they need to know to consult or assert in such a way and how they organize that affirmation. We assume that this simplicity hides an extraordinary complexity that when revealed, will show the learning capacity that they possess and that does not depend on an orderly and linear sequencing as the school pretends today.