On 13 December 2013 10:27, John Clark <johnkcl...@gmail.com> wrote: > > On Thu, Dec 12, 2013 at 6:45 AM, Bruno Marchal <marc...@ulb.ac.be> wrote: > > > In Everett it's always obvious who I'm talking about when I use the >>> personal pronoun "you", it's the only other fellow in the room with me; but >>> in Bruno's thought experiment there is a man standing to the right of the >>> duplicating machine and a identical looking man standing to the left of the >>> duplicating machine and they both have a equal right to use the grand title >>> "you". >>> >> >> > > But they know pretty well who they are in the first person way, >> > > No they do not, not in a world with duplicating machines; and by insisting > that they do you're assuming the most important part of the very thing > you're trying to prove. Mr. You doesn't know if he's the copy or the > original. Mr. You doesn't know if he's 40 years old or 40 seconds old. Mr. > You does know that he's the guy who is having this thought right now, but > in a worjd of duplicating machines that is insufficient information to make > a differentiation because that fellow over there (or is it a mirror) could > be having the exact same thought at the exact same time. >
But I *do *know who I am in the first person, regardless of my personal history, and regardless of the existence of duplicating machines. We could make further extensions to the above scenario - say I'm really a digital copy, stored in a computer in Daniel Dennett's secret laboratory, but linked to the senses of an android which seems to be human - it appears human when it looks at itself in the mirror, etc. As far as I can tell I am that android, and unless it strays so far from my computer that there are appreciable delays in communication, or its batteries run out or something, I will never know otherwise. But even so, I am still correct about who I am. I think you're mixing up my first person knowledge of who am I with the third person knowledge required to know about the history of my body. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to email@example.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.