Let me add my grain of salt to Bruno's post. The No Cloning Theorem applies to the physical duplication but not necessarily to the duplication of information that is carried by a physical substrate. For example, you could very well make a copy of a DVD that reproduces exactly the information stored in the DVD without reproducing exactly the atomic arrangement of the DVD.
The crucial question is whether our consciousness is aware of its physical substrate at the atomic (Planck) level or only at a much higher biological, neurological or psychological level. Would we agree ("Yes Doctor") to an organ substitution at the high level or would we hold out for a a substitution at the Planck level? If we allow copying at the high level, then Bruno's thesis survives.
How much resolution should the copier have? I don't know the answer to this question. I don't even know if copying (increasing measure) has any ethical significance or any other value or drawbacks.
Stephen Paul King wrote: