It's a reducto ad absurdum argument. Either consciousness only emerges in living things, or it exists in everything. The brain is made of tissue and tissue is m

It's a reducto ad absurdum argument. Either consciousness only emerges in living things, or it exists in everything. The brain is made of tissue and tissue is made of matter, therefore, it exists in all mater or doesn't exist at all. I believe this is the thrust of panpsychism/panentheism.