Yes, of course it is "quite hard to understand" what NOT meeting in the 
same present moment would be like. That's because it's impossible and 
self-contradictory. That is why they must meet in the same present moment.


On Sunday, January 5, 2014 7:08:02 PM UTC-5, Liz R wrote:
> On 6 January 2014 12:45, Edgar L. Owen < <javascript:>>wrote:
>> Liz,
>> Yes, of course you are correct. They do it all the time but in the 
>> present moment rather than any clock time simultaneity. Without a present 
>> moment when do they meet up and compare? Certainly not in their individual 
>> clock times which are different.
>> It's quite hard to work out what you mean by this. Are you imagining the 
> twins (or rather, their minds) travelling along their world lines, and 
> hence having to "arrange to meet" at a particular point? Or rather, you 
> seem to be envisaging that the laws of physics automatically arrange for 
> their minds to meet at the same instant, and that if they didn't, one of 
> them might arrive at the meeting point ahead of the other (and presumably 
> would be faced by a person without a mind - a "robot zombie", so to speak).
> Is that the sort of idea you have in mind?

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