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From: Hyman Rosen <hyrosen@mail.com>
Subject: Re: status of PL/I as a viable language
Date: Thu, 20 Feb 2003 15:14:25 -0500
Date: 2003-02-20T15:14:25-05:00	[thread overview]
Message-ID: <1045772065.590669@master.nyc.kbcfp.com> (raw)
In-Reply-To: <2lb33b.7d6.ln@jellix.jlfencey.com>

Vinzent Hoefler wrote:
> In that particular case I'd assume, yes. Some kind of reboot/restart 
> would have helped.

Which actually sounds just like what's happening in the F-22 case,
doesn't it? Things run for a few hours, then have to be rebooted.
That's not exactly a hallmark of a reliable system.

> It was proven that this exception could never occur in normal operation

Sounds pretty much the same to me - a design assumption is violated,
and the programming language error handlers start doing stuff that is
completely inappropriate to the situation out in the world.

> Using the same code in Ariane 5 with the same assumptions as were valid 
> for Ariane 4 was the failure, not the code itself.

And the people who used the Patriot battery for too long (again, assuming
this incident is true) caused the failure, not the software.

Which is to say, complex systems can have complex failure modes,
and the fact that some programming languages will catch simple
errors isn't going to help at all with the complex ones.




  reply	other threads:[~2003-02-20 20:14 UTC|newest]

Thread overview: 135+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <mHZ0a.42983$jM5.108891@newsfeeds.bigpond.com>
     [not found] ` <nRg1a.190899$HG.32437469@news4.srv.hcvlny.cv.net>
     [not found]   ` <3E51908E.9CCA3412@adaworks.com>
     [not found]     ` <8Gh4a.7455$_c6.743959@newsread2.prod.itd.earthlink.net>
     [not found]       ` <3E51ABCE.5491B9A2@adaworks.com>
     [not found]         ` <b2spe6$p23$1@helle.btinternet.com>
     [not found]           ` <3E5273DE.2050206@cox.net>
     [not found]             ` <3E531E6F.BDFB2599@adaworks.com>
     [not found]               ` <3E546C45.4010406@cox.net>
2003-02-20 15:49                 ` status of PL/I as a viable language Richard Riehle
2003-02-20 16:26                   ` Donald L. Dobbs
2003-02-20 17:15                     ` Preben Randhol
2003-02-21  6:24                     ` Anders Wirzenius
2003-02-21 18:44                       ` John R. Strohm
2003-02-20 17:58                   ` Hyman Rosen
2003-02-20 18:44                     ` John R. Strohm
2003-02-20 19:09                       ` Larry Kilgallen
2003-02-20 19:27                         ` John R. Strohm
2003-02-20 19:48                           ` Hyman Rosen
2003-02-20 21:12                             ` John R. Strohm
2003-02-20 21:39                           ` Bobby D. Bryant
2003-02-21 20:36                             ` Randy Brukardt
2003-02-21  8:33                           ` Jean-Pierre Rosen
2003-02-20 19:34                       ` Hyman Rosen
2003-02-20 19:52                         ` Vinzent Hoefler
2003-02-20 20:14                           ` Hyman Rosen [this message]
2003-02-20 21:20                             ` Vinzent Hoefler
2003-02-21  8:14                             ` Ondřej Tučný
2003-02-21 14:54                               ` Hyman Rosen
2003-02-21 15:05                                 ` Vinzent Hoefler
2003-02-21 15:55                                 ` Preben Randhol
2003-02-21 16:45                                   ` Hyman Rosen
2003-02-21 17:40                                     ` Preben Randhol
2003-02-21 17:44                                       ` Preben Randhol
2003-02-21 18:10                                       ` Hyman Rosen
2003-02-21 18:38                                         ` Preben Randhol
2003-02-21 18:40                                           ` Preben Randhol
2003-02-21 18:52                                           ` Hyman Rosen
2003-02-21 19:24                                             ` Vinzent Hoefler
2003-02-21 19:57                                               ` Hyman Rosen
2003-02-21 20:37                                                 ` Vinzent Hoefler
2003-02-21 20:55                                               ` Randy Brukardt
2003-02-21 18:42                                         ` Vinzent Hoefler
2003-02-21 18:48                                 ` John R. Strohm
2003-02-21 20:22                                 ` Richard Riehle
2003-02-21 20:51                                 ` Randy Brukardt
2003-02-21 21:29                                   ` Hyman Rosen
2003-02-21 21:44                                     ` Vinzent Hoefler
2003-02-23  5:05                                       ` Hyman Rosen
2003-02-24 16:29                                         ` Vinzent Hoefler
2003-02-22 11:06                                   ` Preben Randhol
2003-02-23 22:04                                     ` tmoran
2003-02-24  9:32                                       ` Preben Randhol
2003-03-02  2:37                                         ` AG
2003-03-01 13:46                                           ` Preben Randhol
2003-03-03  0:57                                             ` AG
2003-03-02 12:40                                               ` Preben Randhol
2003-03-02 16:52                                                 ` John R. Strohm
2003-03-03  0:19                                                   ` Georg Bauhaus
2003-03-03  3:03                                                     ` John R. Strohm
2003-03-04 12:11                                                     ` Faust
2003-03-04 15:51                                                       ` OT: Crime Frank J. Lhota
2003-03-03  8:01                                                   ` status of PL/I as a viable language Preben Randhol
2003-02-24 20:15                                     ` Randy Brukardt
2003-02-25 10:00                                       ` Preben Randhol
2003-02-26  1:10                                         ` Randy Brukardt
2003-02-26 18:49                                         ` Stephen Leake
2003-02-27 12:09                                           ` Preben Randhol
2003-03-01 18:16                                             ` Richard Riehle
2003-03-02  1:56                                           ` AG
     [not found]                                 ` <iqeli-c2d.ln1@beastie.ix.netcom.com>
2003-02-23  5:13                                   ` Hyman Rosen
2003-02-28 10:32                                     ` Lutz Donnerhacke
2003-02-28 18:52                                       ` Vinzent Hoefler
2003-02-23 19:19                                 ` Berend de Boer
2003-02-24  6:19                                   ` Hyman Rosen
2003-02-20 22:10                         ` Peter Flass
2003-02-20 22:26                         ` Chad R. Meiners
2003-02-21  9:13                         ` Dmitry A. Kazakov
2003-02-21 14:56                           ` Hyman Rosen
2003-02-21 16:04                             ` Preben Randhol
2003-02-21 19:41                             ` Mike Silva
2003-02-21 20:41                             ` Richard Riehle
2003-02-21 21:46                               ` Donald L. Dobbs
2003-02-23  2:23                                 ` Shmuel (Seymour J.) Metz
2003-02-23  5:02                                 ` Hyman Rosen
2003-02-23 18:34                                   ` Donald L. Dobbs
2003-02-24  6:22                                     ` Hyman Rosen
2003-02-21 19:16                           ` John R. Strohm
2003-02-21 19:49                             ` Hyman Rosen
2003-02-21 20:32                               ` Frank J. Lhota
2003-02-21 20:40                                 ` John R. Strohm
2003-02-25 10:31                                   ` Quality (Re: status of PL/I as a viable language) Anders Wirzenius
2003-02-25 13:10                                     ` Marin David Condic
2003-02-26  6:22                                       ` Anders Wirzenius
2003-02-26 11:47                                         ` Larry Kilgallen
2003-02-26 12:40                                           ` Larry Kilgallen
2003-02-26 13:43                                         ` Marin David Condic
2003-02-27  7:05                                           ` Anders Wirzenius
2003-03-01 22:28                                     ` AG
2003-03-01 12:56                                       ` Peter Flass
2003-03-01 19:17                                         ` Frank Clarke
2003-03-01 13:51                                       ` Anders Wirzenius
2003-03-01 13:54                                         ` Anders Wirzenius
2003-03-02 18:51                                           ` AG
2003-03-02  9:55                                             ` Anders Wirzenius
2003-02-21 20:35                               ` status of PL/I as a viable language John R. Strohm
2003-02-21 21:40                                 ` Hyman Rosen
2003-02-21 22:25                                   ` John R. Strohm
2003-02-22 10:56                                   ` Preben Randhol
2003-02-22 19:55                                     ` Everett M. Greene
2003-02-23 11:15                                       ` Preben Randhol
2003-02-22 19:55                                   ` Everett M. Greene
2003-02-22 20:03                                     ` John R. Strohm
2003-02-22 22:38                                       ` Larry Kilgallen
2003-02-21 21:44                             ` Pointless Harlows
2003-02-22  4:51                               ` John W. Kennedy
2003-02-23  0:13                                 ` James J. Weinkam
2003-02-23  2:28                                   ` John W. Kennedy
2003-02-22 13:04                               ` IEFBR14, was " Peter Flass
2003-02-22 19:08                                 ` Robert Munck
2003-02-23  9:53                                   ` Pointless Harlows
2003-02-22 19:31                                 ` John W. Kennedy
2003-02-23  2:12                                 ` Shmuel (Seymour J.) Metz
2003-02-20 21:45                       ` Larry Kilgallen
2003-02-20 22:06                       ` Peter Flass
2003-02-20 23:30                         ` John R. Strohm
2003-02-21 13:46                           ` Peter Flass
2003-02-21 20:33                             ` Shmuel (Seymour J.) Metz
2003-02-21 20:26                           ` Shmuel (Seymour J.) Metz
2003-02-20 22:34                       ` Larry Kilgallen
     [not found]                       ` <1lagi-b33.ln1@beastie.ix.netcom.com>
2003-02-21 16:09                         ` Preben Randhol
2003-02-21 18:10                       ` Larry Kilgallen
2003-02-24 12:00                       ` Larry Kilgallen
2003-02-21 20:16                     ` Shmuel (Seymour J.) Metz
2003-02-22 12:57                       ` Peter Flass
2003-02-23  2:27                         ` Shmuel (Seymour J.) Metz
2003-02-21 20:49                   ` Donald's F-22 Question Richard Riehle
2003-02-21 22:37                     ` Jerry Petrey
2003-02-20 23:00 status of PL/I as a viable language David C. Hoos, Sr.
  -- strict thread matches above, loose matches on Subject: below --
2003-02-21 18:17 Lionel.DRAGHI
2003-02-21 18:44 ` Hyman Rosen
2003-02-22 13:26 David C. Hoos, Sr.
2003-02-26 20:55 David C. Hoos
2003-02-27 12:12 ` Preben Randhol
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