I just lost my whole response, to a timed out session and I'm too lazy to write it again.
Emergent phenomena = "I don't know. Stop asking me annoying questions."
Until science gives a good crack at it, I'm not buying it.
Furthermore, I think I could argue that all "emergent phenomena" are just taking semantics to the extreme. Just because you call a collection of wood a chair, doesn't make "chair" an emergent phenomena.
As for the lost leg. I see your point. However, last time I checked, consciousness was not seated in the femur. Would you make the same argument about removing a pea sized section of the brain?
As for our atoms and who we are. I have no idea what your point is, but I agree. I think DRAM is a perfect example of what you are saying. (the same electrons aren't responsible for the same memory.)
Finally, if I could produce a massively shared protoexperiencing entity (with out a member of the opposite sex), how would I go about testing for said shared protoexperiences. I was thinking something along the Turing lines...