From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fac41,a48e5b99425d742a X-Google-Attributes: gidfac41,public X-Google-Thread: f43e6,a48e5b99425d742a X-Google-Attributes: gidf43e6,public X-Google-Thread: 103376,a48e5b99425d742a X-Google-Attributes: gid103376,public X-Google-Thread: 1108a1,5da92b52f6784b63 X-Google-Attributes: gid1108a1,public From: WhiteR@CRPL.Cedar-Rapids.lib.IA.US (Robert S. White) Subject: Re: Trust but verify (was Re: Papers on the Ariane-5 crash and Design by Contract Date: 1997/03/26 Message-ID: <5ha171$dck@flood.weeg.uiowa.edu>#1/1 X-Deja-AN: 228392427 References: <332B5495.167EB0E7@eiffel.com> <5giu3p$beb$1@news.irisa.fr> <332ED8AB.21E7@lmtas.lmco.com> <5go8nk$ngf$1@news.irisa.fr> <3332C049.2A0F@lmtas.lmco.com> <5gue93$2md$3@news.irisa.fr> <33383A6F.3A5A@lmtas.lmco.com> Organization: ... Newsgroups: comp.lang.eiffel,comp.object,comp.software-eng,comp.lang.ada Date: 1997-03-26T00:00:00+00:00 List-Id: In article <33383A6F.3A5A@lmtas.lmco.com>, GarlingtonKE@lmtas.lmco.com says... >Lord have mercy, why do people who have never tested an IRS INSIST on >explaining >it to those of us who have! I also work_on/design/(write requirements for)/integrate IRS's (I call them Inertial Navigation Systems - INS) and I agree completely with Ken. So don't think it is just him that has been put off by people saying that "Design By Contract with the Eiffel language" would have (alone - without simulation or HWIL) testing) prevented the Arianne 5 disaster. And it is normal industry practice to have different (from the designers/coders) personnel do the qualification tests (HWIL) test procedures and conduct the tests using the "Black Box" requirements. _______________________________________________________________________ Robert S. White -- an embedded sys software engineer -- my personal comments from industry experience at Rockwell Collins Inc.