From: utzoo!decvax!cca!gwyn@BRL@sri-unix
Newsgroups: net.physics
Title: Re:  paradoxical twins
Article-I.D.: sri-unix.3320
Posted: Fri Sep 17 01:47:43 1982
Received: Fri Sep 17 06:33:51 1982

From:     Doug Gwyn 
Hope you liked my long explanation of the twins paradox.

There is a fundamental problem with trying to "understand" relativity
to the extent that things like the twins paradox seem obvious --
This paradox, and many other points, cannot be completely understood
within ANY known conceptual scheme.  In fact this is why Einstein kept
on going, on to General Relativity, then Unified Field Theory.
He saw very deeply into the situation and realized that many such
questions could only be satisfactorily answered when global considerations
were properly dealt with.  Such things as asymptotic degrees of freedom
of fields and boundary value determination are crucial to a complete
comprehensive relativistic physics.

This means you are right to feel that there is something hard to grasp
about the twins paradox!