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TheOtherDave comments on How to deal with non-realism? - Less Wrong
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Yes, I meant protoplasm.
If I knew that I am currently running on a silicon chip (Gunm-style), then I would be highly confident that replacing that chip by another, identical one, preserves my identity, because it's the same configuration. Moreover, replacing my old chip by a newer one, before the physical deterioration significantly affects the actual software processing, probably would work as well.
But if we're talking about running my software on a different chip through, say, a virtual machine that emulate my original chip, then I would be less confident that it would still be me. As confident as I am that, an EM of my current wetware would still be me. Which is, currently, not confident enough to make the leap.
Ah, and if I do learn that I run on a chip, I won't turn crazy. I may be worried if I knew my wetware self were still running around, and I may not tell my mother, but besides that I don't really care. If I knew that my wetware self was "dead", then I would wonder if I should feel sorry for him, or if I'm actually him. Because I value my life, I know that my wetware self did too. But I'd probably get over it with the knowledge that the rest of the world (including my family) didn't lose anything, (or at least they wouldn't suspect a thing).
I'm confident an EM would not be a PZombie.
(nods) Makes sense.
Presumably the reason you have such confidence about the interchangeability of identical chips is because your experience encompasses lots of examples of such chips behaving interchangeably to support a given application. More generally, you've learned the lesson through experience that while two instances of the same product coming off similar assembly lines may not be 100% identical, they are reliably close enough along the dimensions we care about to be interchangeable.
And, lacking such experience about hardware/wetware interchangeability, you are properly less certain about the corresponding conclusion.
Presumably, if that sort of experience became commonplace, your confidence would increase.