Consciousness works with information (electromagnetism), and the fundamental particle of the electromagnetic field, the photon, has zero mass, it is not matter, but energy. I know we need the nervous system for consciousness to happen, but this would be the "hardware", not the "software". I'm not saying consciousness exists because of God or anything like that, don't get me wrong, but I have to say "materialism" is a conception already discarded by quantum mechanics advancements, as we