Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!watmath!clyde!akgua!mcnc!decvax!harpo!ihnp4!zehntel!tektronix!hplabs!sri-unix!JAF%MIT-SPEECH@MIT-MC.ARPA From: JAF%MIT-SPEECH@MIT-MC.ARPA Newsgroups: net.sf-lovers Subject: Re: SF-LOVERS Digest V9 #56 Message-ID: <12396@sri-arpa.UUCP> Date: Fri, 6-Apr-84 07:22:02 EST Article-I.D.: sri-arpa.12396 Posted: Fri Apr 6 07:22:02 1984 Date-Received: Mon, 23-Apr-84 01:19:46 EST Lines: 19 From: Joseph A. Frisbie If you can cruise around faster than light, then it follows (from special relativity, Lorentz transformations, etc) that you can find a frame of reference where A occurs before B, and one where B occurs before A for any two events A and B. I'm sure you've pictures of light cones where spacetime is divided into regions -- events that couldn't have effect A, events that could, events A can effect, events that A will never effect. All this goes away and your left with any event able to affect any other event, not so good if you want to hang on to causality. Thermodynamics is the only process that is not time-symetric, you can tell which way time is running by seeing if you are creating or losing ordered energy. Joe -------