When does an idea become “real”? The types and the beliefs that the moon affects us could be true, but I don’t believe that we are capable of capturing the truth on these matters. Even if, as soon as we do, it changes us. What I am saying is that our knowledge of the types can never be complete and so I don’t believe our categorizations of these things are more than the knowledge we gain about ourselves in our dreams. It’s like we are quantum particles. The observations are real, predictions can be made, but the nature is not understood. We can call water steam or ice, but it can be either and its molecules are the same.