From: utzoo!decvax!harpo!ihps3!houxi!deimos!orion!lime!houti!trc Newsgroups: net.physics Title: RE: twins paradox Article-I.D.: houti.162 Posted: Fri Sep 17 16:12:47 1982 Received: Tue Sep 21 09:32:58 1982 Sorry, I did NOT invoke simultaneity - the age differences need only checked when the twins return to the same frame of reference. Please also note that both twins in my description changed frames of reference to an equal degree. The only difference in their experiences was the amount of time spent in those frames of reference. This certainly seems to imply that it is the frame of reference, not merely the changing of frames, that makes the difference. Tom Craver houti!trc