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From: mjs14@unix.brighton.ac.uk (shute)
Subject: Re: Roger Penrose's New Book (in HTML) 1.0
Message-ID: <1994Nov4.122812.830@unix.brighton.ac.uk>
Organization: University of Brighton, UK
References: <38ggcv$922@netaxs.com> <MATT.94Oct24122816@physics2.berkeley.edu> <39bhpo$1d1@news-rocq.inria.fr>
Date: Fri, 4 Nov 1994 12:28:12 GMT
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Xref: glinda.oz.cs.cmu.edu sci.physics:98876 sci.skeptic:94134 sci.psychology:28977 comp.ai.philosophy:21651 sci.bio:22849 sci.philosophy.meta:14526

>In article <MATT.94Oct24122816@physics2.berkeley.edu>, matt@physics2.berkeley.edu (Matt Austern) writes:
>|> No.  There is no reason, either experimental or theoretical, to think
>|> that it is possible to send a message across a spacelike interval.
>|> (Which is a good thing: if you could do that, then you'd have time
>|> travel. 

In article <39bhpo$1d1@news-rocq.inria.fr> ziane@monica.inria.fr (Mikal Ziane (Univ. Paris 5 and INRIA) ) writes:
>But if you could send such a message, would not you have to revise your
>defintion of time ? And then, why would it still necessarily mean that
>time travel would be possible ?

Err.
Forgive my ignorance...
but, what does it mean "to send a message across a spacelike interval".

If write down a memo to my colleague on the other side of the room, and
lob it over to him... it has crossed space.  If I write a memo to myself,
and leave it at the same space co-ordinates, I can read it some time later,
and I'll have communicated across time.

So... please put me out of my agony...
What are you folks on about?

Thanks in advance.
-- 

Malcolm SHUTE.         (The AM Mollusc:   v_@_ )        Disclaimer: all

