Re: Let's talk about UFOs then

From	Steve Thompson <stevet810@gmail.com>
Newsgroups	comp.lang.c
Subject	Re: Let's talk about UFOs then
Date	2015-03-07 17:08 +0000
Organization	Friends of the Galactic Collective
Message-ID	<Y9Pj92.OET.DLkva@gmail.com> (permalink)
References	(5 earlier) <md6iqs$ksb$1@dont-email.me> <u7yIh7.ih6.oeixY@gmail.com> <87twxzpk1a.fsf@bsb.me.uk> <HbpYyU.nFY.P2oPW@gmail.com> <87bnk76yp7.fsf@bsb.me.uk>

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On Thu, Mar 05, 2015 at 07:17:40PM +0000, Ben Bacarisse wrote:
> Steve Thompson <stevet810@gmail.com> writes:
> 
> > On Thu, Mar 05, 2015 at 02:59:29PM +0000, Ben Bacarisse wrote:
> >> Steve Thompson <stevet810@gmail.com> writes:
> >> <snip>
> >> > But anyhow, mathematics and computation seem to be intrinsics of
> >> > existence and I wonder what our hypothetical aliens might think of C
> >> > and in particular Standard C (Say C99).  Most of us here think it is a
> >> > good language, and yet it is perhaps not the best general purpose
> >> > language.  Is it even slightly productive to consider what an Alien C
> >> > might look like?  Or should we perhaps assume that the future of
> >> > computing will involve the gate-level reconfiguration of a general
> >> > purpose machine to the problem at hand in a fashion perhaps analogous
> >> > to the way FPGAs are often used today, and that C will become a relic
> >> > of our primitive fixed-architecture computers.
> >> 
> >> It seems perfectly possible that the whole class of programming
> >> languages to which C belongs might not exist in an alternative history
> >> (or alien planet if you prefer that form of speculation).
> >
> >> Church's lambda calculus (slightly) predates the notion of a Turing
> >> machine, but pretty much everyone (Church included) agreed that Turing's
> >> model captures, more naturally, the idea of a procedure or method.  And
> >> then it turned out that something not entirely unlike a universal TM
> >> (minus unbounded store) was realisable in hardware only a few years
> >> later.
> >  
> >> "Functional" programming languages are not a natural fit for this type
> >> of hardware, but imagine if someone had come up with the lambda calculus
> >> in, say, the mid 19th century.  It's a useful tool for formalising logic
> >> (it's original purpose) and it would have become the "obvious" way of
> >> specifying a logical or mechanical procedure.  It seems likely that
> >> early electronic computers might then have been designed with some sort
> >> of tree-rewriting system rather than a linear writable store.
> >
> >> On such hardware, C would probably be unbelievably slow and cumbersome
> >> and it wold offer nothing by way of compensation.
> >
> > I struggle to imagine a "lambda calculus machine" that would do
> > "tree-rewriting".  I understand that hardware defines the meaning of
> > bits in a program, however the notion of going from bits to base-2
> > numerical representation to binary logical operators to computing
> > machinery that operates with those primitive entities seems to be
> > something of a minimum energy path, and leads pretty much straight to
> > functional programming, does it not?
> 
> That's just arithmetic -- I am pretty sure any machine would have
> arithmetic, and binary arithmetic has obvious advantages making it a
> natural choice.
> 
> >  Your calculus machine would seem
> > to require "more energy" to get from theory to a functional prototype,
> > but I may be misunderstanding something important here so I cannot be
> > all that confident of this armchair analysis.
> 
> Obviously I am speculating too, but is it obviously the "least energy"
> path to go from "what is the sum of these numbers?" to putting the numbers
> in consecutively addressed storage locations; using another location
> (which we'll call a register) to address them; setting yet another to
> zero; fetching the number indexed by the first into another location
> where we can add to the value fetched from the total; then write back
> the new sum; increment the address; jump back to the start of whole
> operation...?
> 
> <snip>
> > Perhaps if you could describe what you mean by a lambda calculus
> > machine I might find it easier to assess its complexity.
> 
> Lambda forms are evaluated by repeated substitution of names for
> values; those values being, in general, other forms.  The basic
> operations you need are those that let you built and re-write tree
> structures.  In such a model there is no inherent interest in what
> follows what in memory.  What matters are (in the simplest form) the
> left and right children of a cell.  You want to be able to allocate a
> cell and have un-referenced cells made available for re-use.
> 
> The rewriting needs to handle some issues relating to bound variables,
> but that whole issue can be elegantly finessed by removing all the names
> from the forms.  Every lambda form can be converted to one that has no
> variables at all and the resulting tree is particularly simple to
> reduce.
> 
> I've no idea if this is really plausible as an alternative path for
> electronic computers, but I am also sure that I don't know it isn't, and
> that seems to be the key to alternate history speculation.

It still sounds as though the memory used to represent the tree is
going to have the same basic properties of RAM as we know it, and that
your tree operations are simply going to represent complex microcoded
operations.

The thing about memory cells are that in number they will still be
made of large numbers of gates.  If you are positing an entirely
different kind of memory cell, that merely suggests that the
logic-gate arrangement is more complex and not that arrays of memory
cells will be managed or instantiated as anything other than an array.




Regards,

Steve Thompson

-- 
GOTO's are like guns.  Safety is entirely contingent on the user.

Thread

Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-02-24 23:56 +0100
  Let's talk about UFOs then asetofsymbols@gmail.com - 2015-02-25 00:10 -0800
  Let's talk about UFOs then asetofsymbols@gmail.com - 2015-02-25 00:12 -0800
    Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-02-25 09:00 +0000
  Re: Let's talk about UFOs then fir <profesor.fir@gmail.com> - 2015-02-25 02:06 -0800
  Re: Let's talk about UFOs then Greg Martin <greg.at.softsprocket@dot.com> - 2015-02-25 15:47 +0000
    Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-02-25 17:51 +0100
      Re: Let's talk about UFOs then Greg Martin <greg.at.softsprocket@dot.com> - 2015-02-25 17:03 +0000
        Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-02-25 18:22 +0100
          Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-02-25 10:03 -0800
            Re: Let's talk about UFOs then Keith Thompson <kst-u@mib.org> - 2015-02-25 10:48 -0800
              Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-02-25 21:33 +0100
                Re: Let's talk about UFOs then fir <profesor.fir@gmail.com> - 2015-02-25 13:25 -0800
                Re: Let's talk about UFOs then fir <profesor.fir@gmail.com> - 2015-02-25 13:52 -0800
      Re: Let's talk about UFOs then Clark Smith <noaddress@nowhere.net> - 2015-02-25 17:49 +0000
      Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-02-26 14:13 +0100
    Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-02-25 17:53 +0100
    Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-02-25 17:58 +0100
  Let's talk about UFOs then Chad <cdalten@gmail.com> - 2015-02-25 13:52 -0800
    Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-02-25 14:26 -0800
      Re: Let's talk about UFOs then Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-02-25 21:10 -0700
    Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-02-25 22:35 +0000
      Re: Let's talk about UFOs then fmassei@gmail.com - 2015-02-25 14:46 -0800
        Re: Let's talk about UFOs then Geoff <geoff@invalid.invalid> - 2015-02-25 17:59 -0800
    Re: Let's talk about UFOs then Geoff <geoff@invalid.invalid> - 2015-02-25 17:53 -0800
      Re: Let's talk about UFOs then luser droog <luser.droog@gmail.com> - 2015-02-26 00:53 -0800
        Re: Let's talk about UFOs then Geoff <geoff@invalid.invalid> - 2015-02-26 10:38 -0800
      Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-02-26 04:47 -0800
        Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-02-26 12:51 +0000
      Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-02-26 16:41 +0100
        Re: Let's talk about UFOs then raltbos@xs4all.nl (Richard Bos) - 2015-02-26 16:46 +0000
        Re: Let's talk about UFOs then Geoff <geoff@invalid.invalid> - 2015-02-26 10:16 -0800
    Let's talk about UFOs then asetofsymbols@gmail.com - 2015-02-25 21:54 -0800
      Let's talk about UFOs then mt <mahdert@gmail.com> - 2015-02-26 00:09 -0800
      Let's talk about UFOs then asetofsymbols@gmail.com - 2015-02-26 05:56 -0800
  Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-02-26 13:53 +0100
    Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-02-26 16:39 +0100
      Re: Let's talk about UFOs then Robert Wessel <robertwessel2@yahoo.com> - 2015-02-26 14:00 -0600
        Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-02-26 21:30 +0100
          Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-02-26 22:41 +0100
            Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-02-26 22:56 +0100
              Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-02-27 10:16 +0100
                Re: Let's talk about UFOs then Keith Thompson <kst-u@mib.org> - 2015-02-27 08:25 -0800
                Re: Let's talk about UFOs then fir <profesor.fir@gmail.com> - 2015-02-27 10:14 -0800
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-02-28 15:39 +0100
                Re: Let's talk about UFOs then Bartc <bc@freeuk.com> - 2015-03-01 15:51 +0000
                Re: Let's talk about UFOs then Geoff <geoff@invalid.invalid> - 2015-03-01 11:12 -0800
                Re: Let's talk about UFOs then raltbos@xs4all.nl (Richard Bos) - 2015-03-02 09:04 +0000
                Re: Let's talk about UFOs then Tim Rentsch <txr@alumni.caltech.edu> - 2015-03-24 13:04 -0700
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-25 09:22 +0100
                Re: Let's talk about UFOs then Ian Collins <ian-news@hotmail.com> - 2015-03-25 21:27 +1300
                Re: Let's talk about UFOs then asetofsymbols@gmail.com - 2015-03-25 02:16 -0700
                Re: Let's talk about UFOs then asetofsymbols@gmail.com - 2015-03-25 10:22 -0700
                Re: Let's talk about UFOs then Tim Rentsch <txr@alumni.caltech.edu> - 2015-03-25 10:23 -0700
                Re: [OT] Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-25 21:29 +0100
                Re: [OT] Let's talk about UFOs then Tim Rentsch <txr@alumni.caltech.edu> - 2015-03-25 16:27 -0700
            Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-02-26 14:01 -0800
              Re: Let's talk about UFOs then Robert Wessel <robertwessel2@yahoo.com> - 2015-02-26 23:17 -0600
                Re: Let's talk about UFOs then jt@toerring.de (Jens Thoms Toerring) - 2015-02-27 12:15 +0000
              Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-02-27 10:29 +0100
            Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-02-26 14:10 -0800
              Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-02-27 10:45 +0100
      Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-02-26 22:12 +0100
        Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-02-26 22:43 +0100
          Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-02-26 23:09 +0100
          Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-02-26 22:10 +0000
            Re: Let's talk about UFOs then fmassei@gmail.com - 2015-02-26 14:19 -0800
          Re: Let's talk about UFOs then fir <profesor.fir@gmail.com> - 2015-02-27 00:57 -0800
          Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-02-27 11:09 +0100
            Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-02-27 09:10 -0800
              Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-02-27 21:38 +0100
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-02-27 13:55 -0800
              Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-02-28 16:20 +0100
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-02-28 08:09 -0800
                Re: Let's talk about UFOs then fmassei@gmail.com - 2015-02-28 09:21 -0800
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-02-28 09:28 -0800
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-01 12:49 +0100
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-01 05:59 -0800
                Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-03-01 15:50 +0100
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-01 07:10 -0800
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-01 23:01 +0100
                Re: Let's talk about UFOs then Geoff <geoff@invalid.invalid> - 2015-03-01 11:28 -0800
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-01 19:39 +0000
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-01 12:36 -0800
                Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-03-01 21:55 +0100
                Re: Let's talk about UFOs then Geoff <geoff@invalid.invalid> - 2015-03-01 13:39 -0800
                Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-03-02 01:33 +0100
                Re: Let's talk about UFOs then Geoff <geoff@invalid.invalid> - 2015-03-01 16:53 -0800
                Re: Let's talk about UFOs then Greg Martin <greg.at.softsprocket@dot.com> - 2015-03-02 14:49 +0000
                Re: Let's talk about UFOs then Robert Wessel <robertwessel2@yahoo.com> - 2015-03-01 16:14 -0600
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-01 22:49 +0100
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-01 14:02 -0800
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-01 23:04 +0000
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-02 02:29 +0100
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-02 00:41 -0800
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-02 08:51 +0000
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-02 02:07 -0800
                Re: Let's talk about UFOs then raltbos@xs4all.nl (Richard Bos) - 2015-03-04 09:44 +0000
                Re: Let's talk about UFOs then Kaz Kylheku <kaz@kylheku.com> - 2015-03-01 14:26 +0000
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-01 23:08 +0100
                Re: Let's talk about UFOs then Stephen Sprunk <stephen@sprunk.org> - 2015-03-01 14:31 -0600
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-01 12:44 -0800
                Re: Let's talk about UFOs then Stephen Sprunk <stephen@sprunk.org> - 2015-03-03 08:24 -0600
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-03 15:11 +0000
                Re: Let's talk about UFOs then Greg Martin <greg.at.softsprocket@dot.com> - 2015-03-03 15:51 +0000
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-03 16:20 +0000
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-04 09:48 +0100
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-04 01:05 -0800
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-04 10:41 +0100
                Re: Let's talk about UFOs then fir <profesor.fir@gmail.com> - 2015-03-04 05:06 -0800
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-01 20:58 +0000
                Re: Let's talk about UFOs then Stephen Sprunk <stephen@sprunk.org> - 2015-03-03 08:59 -0600
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-03 15:52 +0000
                Re: Let's talk about UFOs then James Kuyper <jameskuyper@verizon.net> - 2015-03-03 12:11 -0500
                Re: Let's talk about UFOs then Stephen Sprunk <stephen@sprunk.org> - 2015-03-03 11:40 -0600
                Re: Let's talk about UFOs then James Kuyper <jameskuyper@verizon.net> - 2015-03-03 12:59 -0500
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-03 11:43 -0800
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-04 10:00 +0100
                Re: Let's talk about UFOs then Stephen Sprunk <stephen@sprunk.org> - 2015-03-04 12:57 -0600
                Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-03-03 19:19 +0100
                Re: Let's talk about UFOs then Stephen Sprunk <stephen@sprunk.org> - 2015-03-03 12:55 -0600
                Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-03-03 22:47 +0100
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-03 14:24 -0800
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-04 10:22 +0100
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-04 11:54 +0000
                Re: Let's talk about UFOs then Steve Thompson <stevet810@gmail.com> - 2015-03-05 03:14 +0000
                Re: Let's talk about UFOs then Stephen Sprunk <stephen@sprunk.org> - 2015-03-04 14:22 -0600
                Re: Let's talk about UFOs then Steve Thompson <stevet810@gmail.com> - 2015-03-05 02:57 +0000
                Re: Let's talk about UFOs then Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-03-05 14:59 +0000
                Re: Let's talk about UFOs then Aleksandar Kuktin <akuktin@gmail.com> - 2015-03-05 15:43 +0000
                Re: Let's talk about UFOs then Morris Dovey <mrdovey@iedu.com> - 2015-03-05 09:57 -0600
                Re: Let's talk about UFOs then Steve Thompson <stevet810@gmail.com> - 2015-03-05 17:59 +0000
                Re: Let's talk about UFOs then Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-03-05 19:17 +0000
                Re: Let's talk about UFOs then Steve Thompson <stevet810@gmail.com> - 2015-03-07 17:08 +0000
                Re: Let's talk about UFOs then Robert Wessel <robertwessel2@yahoo.com> - 2015-03-05 21:27 -0600
                Re: Let's talk about UFOs then Steve Thompson <stevet810@gmail.com> - 2015-03-07 18:22 +0000
                Re: Let's talk about UFOs then glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-03-07 19:01 +0000
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-05 11:43 -0800
                Re: Let's talk about UFOs then Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-03-05 20:16 +0000
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-06 09:58 +0100
                Re: Let's talk about UFOs then Greg Martin <greg.at.softsprocket@dot.com> - 2015-03-05 15:59 +0000
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-01 23:17 +0100
                Re: Let's talk about UFOs then James Dow Allen <jdallen2000@yahoo.com> - 2015-03-01 19:17 -0800
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-02 08:30 +0000
                Re: Let's talk about UFOs then Stephen Sprunk <stephen@sprunk.org> - 2015-03-03 09:47 -0600
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-03 16:16 +0000
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-04 11:12 +0100
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-04 12:09 +0000
                Re: Let's talk about UFOs then Kaz Kylheku <kaz@kylheku.com> - 2015-03-04 12:16 +0000
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-04 12:40 +0000
                Re: Let's talk about UFOs then Steve Thompson <stevet810@gmail.com> - 2015-03-05 03:23 +0000
                Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-03-04 15:30 +0100
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-04 17:31 +0000
                Re: Let's talk about UFOs then Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-03-04 10:46 -0800
                Re: Let's talk about UFOs then Richard Heathfield <rjh@cpax.org.uk> - 2015-03-04 18:56 +0000
                Re: Let's talk about UFOs then Stephen Sprunk <stephen@sprunk.org> - 2015-03-16 18:25 -0500
          Re: Let's talk about UFOs then gamo <gamo@telecable.es> - 2015-03-02 12:22 +0100
            Re: Let's talk about UFOs then gamo <gamo@telecable.es> - 2015-03-02 14:12 +0100
              Re: Let's talk about UFOs then jacob navia <jacob@spamsink.net> - 2015-03-03 09:08 +0100
                Re: Let's talk about UFOs then gamo <gamo@telecable.es> - 2015-03-03 10:00 +0100
        Re: Let's talk about UFOs then Bartc <bc@freeuk.com> - 2015-02-26 22:07 +0000
        Re: Let's talk about UFOs then Geoff <geoff@invalid.invalid> - 2015-02-26 14:21 -0800
          Re: Let's talk about UFOs then David Brown <david.brown@hesbynett.no> - 2015-02-27 11:18 +0100

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