The extraordinary complexity of living things, particularly in regards to consciousness, remains baffling today. Today we can clone, but that is just a physical platform for consciousness, not the consciousness of the person that lived, as you point out.

The grasp of who and what we are will develop concomitantly with the specific technologies I address, and is assumed in my essay, rather than specifically treated therein. I am simply incompetent to address it, so must leave it to others. An interesting aspect of consciousness is the existence of people with two heads, siamese twins. Sharing a physical body, two people do in fact share their experiences of the world, yet remain discrete consciousnesses. This reveals that cloning but produces meatbags based on identical blueprints, and vehicles for separate persons.

It is not cloning I expect, but resurrection of people. I did not mention, but believe, that physical meatbags are going to become rather variable, if even necessary, as development of technology progresses.