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From: bilbo.niket@LOCUS.UCLA.EDU ("Niket K. Patwardhan")
Newsgroups: net.space
Subject: Re: SPACE Digest V6 #19
Message-ID: <8511142311.AA02684@s1-b.arpa>
Date: Thu, 14-Nov-85 17:59:31 EST
Article-I.D.: s1-b.8511142311.AA02684
Posted: Thu Nov 14 17:59:31 1985
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I don't know why causality should be linked to pure forward motion in time.
(Ie why cant something that happens in the future cause something in the past?)
If you really want to preserve the transitivity of causality, all you need is
that space-time have some kind of directionality, ie you can go from point A
to point B but not from B to A. You can also make time travel possible as a
notion if you eliminate the idea of free will (ie if I travelled back in time,
something would prevent me from killing my father before I was conceived, even
if I had all the means to do so!)