Like didactic methods, it is efficient; rather than going down blind alleys, children spend their time thinking about the logic that led to desired conclusions. An added advantage of this approach is that it can be applied to a very wide variety of problems. It is possible to ask about almost any conclusion, “How do you think I knew that” (or “Why do you think I think that”.) Encouraging children to explain other people's reasoning in many contexts may lead children to internalize such an analytic stance to the point where they ask such questions reflexively, even when not prompted to do so.