From: Xela@yabbs
To: Cat@yabbs
Subject: re: time...
Date: Sun Mar  6 12:24:00 1994

Something to do with how time slows down to zero as you approach the speed 
of light; the twin on the plane ages slower *relative* to the stationary 
twin, because time is different for the moving twin.

Or something like that.  I have an explanation in terms of linear algebra, 
but I don't understand parts of it.  I think I have the gist of it right.  
Any physics majors want to shoot me down on this one?

-Alex