Would an upload be you?
Survival, replacement, or an empty imitation?
I
Uploading would be survival
You are a pattern of information. If the pattern is preserved and continues to run, you survive, whatever it runs on.
- Best argument
- Your atoms are constantly replaced; what persists is the pattern of organisation. If that pattern is copied exactly and continues on another substrate, everything that makes you you continues. Hans Moravec and others argued that a gradual upload, replacing neurons with artificial ones one at a time while you stay conscious, would make the continuity especially clear.
- Strongest objection
- If the scan is non-destructive, there will be two of you: the original, still in a biological body, and the upload. The original will feel no different and will clearly not have moved into the computer. So uploading creates a copy, not a transfer.
- The reply
- Pattern theorists answer, with Derek Parfit, that in that case both have what matters in survival, and that the gradual method avoids the problem by never creating a duplicate.
- Defended by
- Hans Moravec, Ray Kurzweil, David Chalmers
II
Uploading would be death
An upload, even if conscious, would be a different person. You would die and be replaced by a digital twin.
- Best argument
- Identity requires physical continuity of the brain, or of the organism. A computer running a simulation is a different physical object. The duplication problem shows that copying is never moving: if the copy were you, then two copies would both be you, which is impossible.
- Strongest objection
- If gradual replacement of neurons with silicon would preserve you, as many think, it is hard to see why a fast replacement would not. And your neurons' atoms are replaced over time anyway.
- Defended by
- Eric Olson, Susan Schneider
III
There would be no one there
A simulation of a brain would not be conscious at all. Uploading would produce an elaborate puppet, not a person.
- Best argument
- A simulation of a hurricane does not make anything wet. On biological naturalism, consciousness depends on biological causal powers, not on information processing. A simulated brain would behave as you do but feel nothing.
- Strongest objection
- If behaviour, reports and internal organisation are all exactly as in a conscious person, the claim that there is no experience seems impossible to test, and possibly to state clearly.
- Defended by
- John Searle
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For the full background, variations and open questions, read the entry: Could you upload your mind?.