It is the teacher that says that your gut driven wants and ideas cannot be brought into existence the way like in your fantasy. That also is why it gets ignored broadly. Tell a kid it will get 2 cookies in a n hour or 1 cookie right now. Most prefer the 1 cookie and then lament the lack of another. That is us. Logic let's us foresee the results of actions of people who have none, as well as those of people who got some. From that point of view it is a grim tool for predators with brains.