On Sun, Mar 2, 2014 at 7:44 PM, Edgar L. Owen <[email protected]> wrote:
> Jesse, > > OK good, that's what I assumed you meant. > > BUT now take the two twins at rest standing on opposite sides of the > earth, and then they each start walking in different directions. By your > criterion you then have to say that suddenly and instantly there is NO more > 1:1 correlation of their ages, that they COMPLETELY AND ABSOLUTELY lose > their 1:1 age correlation they had at rest even if they take a SINGLE STEP! > You seem to have misunderstood me, although I thought I was pretty clear--I said that they did NOT have a unique "actual" correlation in their ages when they were at rest relative to each other but at different positions in space, so nothing changes if they start walking, they still don't have any unique "actual" correlation in their ages. Try reading what I wrote again (with the correction I mentioned that 'any unique "actual" truth about their ages' has been changed to 'any unique "actual" truth about the correlation between their ages'): 'No, of course I wouldn't agree that there is any unique "actual" truth about the correlation between their ages in this case, nor would any mainstream physicist. What part of "all frames are equally valid" don't you understand? Or do you not get that if we use an inertial frame where the twins are both moving with the same constant velocity, they do NOT have identical ages at any given moment in this frame? (assuming they had identical ages at any given moment in their rest frame)' Jesse > On Sunday, March 2, 2014 7:13:31 PM UTC-5, jessem wrote: >> >> >> On Sun, Mar 2, 2014 at 7:01 PM, Jesse Mazer <[email protected]> wrote: >>> >>> No, of course I wouldn't agree that there is any unique "actual" truth >>> about their ages in this case, nor would any mainstream physicist. >>> >> >> Sorry, I wrote too quickly here--what I meant is that I don't agree there >> is any unique "actual" truth about the CORRELATION between their ages, i.e. >> whether or not they reach the same age simultaneously (of course there is >> still a unique truth about each one's age at any specific event on his >> worldline). They do reach the same age simultaneously in their comoving >> inertial frame, but this frame's judgments can't be considered any more >> "valid" than a different inertial frame. >> >> Jesse >> >> -- > 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 [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/everything-list. > For more options, visit https://groups.google.com/groups/opt_out. > -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
