I have. But that's only an idea that doesn't hold up. Where is consciousness demonstrable? In biological beings like animals that have the complexity and ordering of components to produce the emergence of consciousness. Does consciousness exist? Yes. For consciousness to exist, it presupposes the existence of existence. The primacy of existence, with the emergence of the power of consciousness to alter, change, affect and create into existence. Assuming the other way is not based upon the demonstrable aspects of reality.