We all work with models of reality, not with reality itself. We work with perceptions of the world: what we see through the various filters our senses apply to support the model of reality we believe in so much we might even say we know this is how things are. In fact, we know very little because our sensory apparatus is so limited and our beliefs and assumptions are so limiting; because our ignorance is so great we can't even know what we don't know, that is essential to know for our models to... Sign in to see full entry.