Identity of composition implies molecular identity :) Or some other kind of physical identity, if you happen to be made of something other than molecules (plasm

Identity of composition implies molecular identity :) Or some other kind of physical identity, if you happen to be made of something other than molecules (plasma?). The question of identity of nature is more interesting, but it's also hard to define. To address your other point, I don't think it's the flip side of the coin: a coin has two sides, and similarity is a continuum. Rejecting consciousness to "dissimilar" things would require that we can split "similarity" and "dissimilarity" and compare which dominates for a particular subject. I think it's more reasonable to see similarity as a continuum, and extend the assumption of - make it consciousness - to less and less similar subjects... And now we arrived at panpsychism.