>>9611675https://en.wikipedia.org/wiki/Allegory_of_the_Cave"Plato has Socrates describe a group of people who have lived chained to the wall of a cave all of their lives, facing a blank wall. The people watch shadows projected on the wall from objects passing in front of a fire behind them, and give names to these shadows. The shadows are the prisoners' reality. Socrates explains how the philosopher is like a prisoner who is freed from the cave and comes to understand that the shadows on the wall are not reality at all, for he can perceive the true form of reality rather than the manufactured reality that is the shadows seen by the prisoners. The inmates of this place do not even desire to leave their prison, for they know no better life. The prisoners manage to break their bonds one day, and discover that their reality was not what they thought it was"
The "shadows" are analogous to any posterior attribute of an object, the fire is analogous to any "instrument of observation". We are the prisoners chained to the wall of our senses and having nothing but shadows to define things as they really are is IMPOSSIBLE. They are posterior attributes to the actual object casting said shadow. Only until the prisoners are free and see the object for what it is, then it is "reifiable", BUT only from the ideas of a prisoner who has been chained to a blank wall his whole life. The object is whatever, it is the same as any other object given to him because all he was given his whole life was LIES. Every object therefore is one thing to him "an idea".
So how is it any different to us right now? Everything is a posterior attribute. There is no cause, nothing is real.
So how do you plan to reify what is not there? What is light other than changing electromagnetic "waves"? How does light "cause" shadows to occur? Shadows are posterior attributes, they don't exist. How does light exist?