On 15 Jul 2017, at 19:29, John Clark wrote:

On Sat, Jul 15, 2017 at 4:26 AM, Bruno Marchal <[email protected]> wrote:

​> ​John Clark misses this by stopping at UDA step 3 (not included), and Bruce seems to stop at step 4 (not included).

I don't know about Bruce but what John Clark missed is reading dumb stuff, and that's a good thing because life is too short for that, especially in something that claims to be as rigorous​ ​as any​ ​mathematical proof. Treating a personal pronoun as if it is a unique object in the universe immediately after a personal pronoun duplicating machine is introduced that can crank the​m​ out like hotcakes is just dumb. ​And so is the idea that the success or failure of a prediction has something to do with the subjective feeling of self. ​

i don't see any ambiguity, given that we have agreed to define the first person use of the pronoun and the third person use of them. A first person, in this setting, is defined by the memory of its experience (or the content of the diary brought in the teleportation box). That is enough to eliminate all ambiguities. We know the guy will be at the two places, with each living only one place.

The ambiguity alluded in your paragraph is artificially produced by your systematic refusal to take into account the key 1p/3p difference, despite it is defined, in this context, in pure 3p terms, making all statements very easy to verified.

Bruno




​ John K Clark​







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http://iridia.ulb.ac.be/~marchal/



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