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From: dewar@cs.nyu.edu (Robert Dewar)
Subject: Re: What good is halting prob?
Date: 1995/04/21
Date: 1995-04-21T00:00:00+00:00	[thread overview]
Message-ID: <dewar.798482893@gnat> (raw)
In-Reply-To: EACHUS.95Apr21103559@spectre.mitre.org

"   Of course, as Robert knows well, if the language is non-trivial,
such a compiler will be guarenteed to give an error message for some
correct programs."

Robert does not "know this well", Robert Eachus and I have argued over his
interpretation of Goedel's theorem in this context. I think his interpretation
is completely bogus, and that this does not apply.

Given a typical computer language, it is certainly possible to write a parser
that is 100.(infinite zeroes) correct in its ability to diagnose syntactically
correct programs.

Of course, given an arbitrary size input, your compiler may require
arbitrary amounts of memory. You may say "ah ha", there you go, a limitation,
because I know perfectly well you don't have arbtirary amounts of memory,
but by the same token, how can you present an arbitrary length program to
the compiler in the first place. This is unuseful angels-on-pins stuff.

I am not uncomfortable with this "consequence" of Goedel's theorem, because
I do not accept that it applies in this case.






      reply	other threads:[~1995-04-21  0:00 UTC|newest]

Thread overview: 75+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1995-03-17  0:24 Should internet support software be written in Ada? Bill Brooks
1995-03-17  8:47 ` Anthony Shipman
1995-03-19 22:06 ` David Weller
1995-03-23 15:05   ` Theodore Dennison
1995-03-24 10:26     ` Fred J. McCall
1995-03-27  9:50       ` Robb Nebbe
1995-03-27 19:43         ` State machines and Goto's (was Re: Should internet support software be written in Ada?) Robert I. Eachus
1995-03-27 23:14           ` Arthur Evans Jr
1995-03-29  0:00           ` Dan
1995-04-01  0:00             ` Mike White
1995-04-04  0:00               ` Robert Dewar
1995-04-06  0:00                 ` Theodore Dennison
1995-04-06  0:00                   ` Norman H. Cohen
1995-04-07  0:00                   ` Tucker Taft
1995-04-07  0:00                   ` Robert Dewar
1995-04-07  0:00                 ` Mike White
     [not found]                   ` <3ma7rt$smt@kaiwan009.kaiwan.com>
     [not found]                     ` <dewar.797514490@gnat>
     [not found]                       ` <3meunj$66u@felix.seas.gwu.edu>
1995-04-20  0:00                         ` CS teachers who can't code their way outta a paper bag Richard A. O'Keefe
1995-03-27 14:24       ` Should internet support software be written in Ada? Theodore Dennison
1995-03-28  0:00         ` Robert Dewar
1995-03-28  9:32         ` Fred J. McCall
1995-03-29  0:00           ` Theodore Dennison
1995-03-29  0:00   ` Robert I. Eachus
1995-03-31  0:00     ` Theodore Dennison
1995-04-05  0:00   ` Wes Groleau
1995-04-07  0:00   ` State machines and Goto's (was Re: Should internet support software be written in Ada?) Wes Groleau
1995-04-07  0:00     ` Robert Firth
     [not found]       ` <D6qyv0.6Jv@nntpa.cb.att.com>
1995-04-19  0:00         ` Fergus Henderson
1995-04-19  0:00           ` Fred J. McCall
1995-04-19  0:00             ` George Haddad
1995-04-20  0:00             ` Mark A Biggar
1995-04-20  0:00             ` State machines and Goto's (was Re: Sho Brian Hanson
1995-04-20  0:00             ` State machines and Goto's (was Re: Should internet support software be written in Ada?) Bill Winn
1995-04-20  0:00               ` Robert Dewar
1995-03-22 23:08 ` Should internet support software be written in Ada? Keith Thompson
     [not found] ` <3mrv7h$3mq@larry.rice.edu>
     [not found]   ` <3msnu4$6am@kaiwan009.kaiwan.com>
     [not found]     ` <KUBEK.95Apr18213646@insage.gerii.insa-tlse.fr>
     [not found]       ` <cppD792GC.1uI@netcom.com>
1995-04-20  0:00         ` Teaching OO/C++ Philip Machanick
     [not found] ` <3me1qs$n4a@theopolis.orl.mmc.com>
     [not found]   ` <3mevmu$8an@felix.seas.gwu.edu>
     [not found]     ` <3mh75i$8eu@rational.rational.com>
     [not found]       ` <3mjihr$iqq@felix.seas.gwu.edu>
     [not found]         ` <3mp20f$80t@kaiwan009.kaiwan.com>
1995-04-20  0:00           ` Academic CS Losers? Phillip Fanous
1995-04-21  0:00             ` Bill Winn
     [not found] ` <dewar.798093453@gnat>
1995-04-20  0:00   ` What good is halting prob? Max Hailperin
     [not found] ` <dewar.798207931@gnat>
     [not found]   ` <cppD78ywq.B31@netcom.com>
     [not found]     ` <dewar.798240702@gnat>
1995-04-19  0:00       ` Problems with proofs Brian Harvey
1995-04-19  0:00         ` Robert Dewar
1995-04-20  0:00       ` Robin Rowe
1995-04-20  0:00         ` Robert Dewar
1995-04-20  0:00         ` Robert Dewar
1995-04-21  0:00           ` Robin Rowe
1995-04-21  0:00             ` Robert Dewar
1995-04-20  0:00         ` Steve Tate
1995-04-20  0:00           ` Apology to Steve Robin Rowe
1995-04-21  0:00         ` Problems with proofs Larry Kahn
1995-04-20  0:00       ` Robin Rowe
     [not found]     ` <3n1fsv$lgd@butch.lmsc.lockheed.com>
1995-04-20  0:00       ` Robin Rowe
1995-04-20  0:00         ` Garlington KE
     [not found] ` <cppD75t6F.47M@netcom.com>
     [not found]   ` <EACHUS.95Apr17172831@spectre.mitre.org>
     [not found]     ` <cppD77Ex6.E77@netcom.com>
     [not found]       ` <3mve9b$gaj@news.cais.com>
1995-04-18  0:00         ` What good is halting prob? Jay M Martin
1995-04-19  0:00           ` Steve Tate
1995-04-20  0:00             ` Jay M Martin
1995-04-21  0:00               ` Steve Tate
1995-04-21  0:00             ` Ray Toal
     [not found]         ` <cppD7880n.32B@netcom.com>
1995-04-19  0:00           ` Randolph Crawford
1995-04-19  0:00             ` Robert Dewar
1995-04-20  0:00             ` Robin Rowe
1995-04-20  0:00               ` Robert Dewar
1995-04-20  0:00                 ` Robin Rowe
1995-04-21  0:00                   ` Brian Hanson
1995-04-21  0:00           ` sxc
     [not found]       ` <dewar.798172270@gnat>
     [not found]         ` <cppD786FM.1u9@netcom.com>
     [not found]           ` <dewar.798207364@gnat>
     [not found]             ` <cppD78xMv.49w@netcom.com>
1995-04-19  0:00               ` Robb Nebbe
     [not found]             ` <3n0ka7$b57@hermes.unt.edu>
     [not found]               ` <dewar.798232482@gnat>
1995-04-19  0:00                 ` Mark A Biggar
1995-04-19  0:00                   ` Robert Dewar
1995-04-19  0:00                   ` Steve Tate
1995-04-19  0:00           ` Mark A Biggar
1995-04-19  0:00             ` Richard Ladd Kirkham
1995-04-19  0:00               ` Robert Dewar
1995-04-20  0:00                 ` Richard Ladd Kirkham
1995-04-20  0:00                   ` Robert Dewar
1995-04-21  0:00               ` Mark A Biggar
1995-04-21  0:00       ` Robert I. Eachus
1995-04-21  0:00         ` Robert Dewar [this message]
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