Very interesting. We have to be careful about the assumptions we make. How do we know that even something like the Sun is not conscious? As Sam Harris said in Waking Up-if the Sun were in fact conscious, how would we expect it to act any different? We don’t understand the brains role in consciousness, other than there is a role. My money would be on plants likely having some form of self awareness, but of course like everything else about the subject, hard to know. If a plant, why not a complex system made of silicon? There are just atoms of different sizes flying around in all these systems.