On Sun, Jul 31, 2016 at 2:45 PM, Brent Meeker <[email protected]> wrote:

​>> ​
>> ​But there is nothing in the laws of physics to prevent somebody else
>> ​from having those exact same memories.
>
>
> ​> ​
> At the level of macroscopic bodies there is. The somebody else can't
> occupy the same place at the same time
>

​A beam of light can.​

​And in a macroscopic superfluid like liquid helium the quantum state and
identity ​of the individual atoms in it  have merged into one.

​> ​
> and so must have a different perspective on all events
>

​You and your identical copy are 10 feet apart looking directly at each
other and both of you are 5 feet from the center of a spherically
symmetrical room.  You are in different positions ​

​but your perspectives are identical.​

​> ​
> Could there be such a person who had false memories and perceptions
> exactly matching yours?
>

​Yes but the memories aren't false,​
 Brent Meeker
​ actually did exactly what you remember ​
Brent Meeker
​ doing. So you are ​
Brent Meeker
​.


> ​> ​
> There's no physical process whereby exactly the same information could
> come to him independently of you.
>

Brent Meeker
​'s memories are what makes ​
Brent Meeker
​ ​
Brent Meeker
​, so ​
Brent Meeker
​'s​
​ memories can only come from ​
Brent Meeker
​.​


 John K Clark

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