The Platonic Ideal is a concept that suggests that all things that exist are imperfect representations of some true perfect, ethereal concept. In The Republic, Plato expounds upon his particular take on metaphysics in a way categorically designed to make one go cross-eyed. The main thrust of it is that what we see and interact with in the real world are mere shades of what is really there. Any chair that you see is not really a chair, but a reflection of the Platonic Ideal of “chairness.” The ideal presupposes the material. As a thought experiment and in meeting Plato’s larger goal of getting people to doubt what they know and truly learn, it’s great. However, as a metaphysical idea unto itself, it breaks down.