In the year 400 BC, Plato realized that were you to drag someone out of a cave who had lived there all their life, facing a wall the whole time and seeing only shadows cast by a flame behind them, this person would probably not recognize real objects. Instead, they would likely believe that the shadows, which were all they had ever seen until then, were real and the objects illusory. And if you were to tell this cave prisoner otherwise, they would not think to remark “You’re very wise. I’m going to listen to you,” but rather “What a fool you are. You have no grasp on reality. Stop embarrassing yourself.