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=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: a07f3367d7,7c1ca6be7961c074 X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII Path: g2news2.google.com!postnews.google.com!o14g2000vbo.googlegroups.com!not-for-mail From: sjw Newsgroups: comp.lang.ada Subject: Re: OT?: AF 447 and avionics software Date: Sat, 6 Jun 2009 03:38:50 -0700 (PDT) Organization: http://groups.google.com Message-ID: <7b4aed55-0885-4513-8db7-c42879e5f341@o14g2000vbo.googlegroups.com> References: <78pifuF1k9uvuU1@mid.individual.net> <2fb5ee80-6a89-4df1-b4a7-e0922f179f68@h18g2000yqj.googlegroups.com> NNTP-Posting-Host: 82.20.239.89 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: posting.google.com 1244284730 1685 127.0.0.1 (6 Jun 2009 10:38:50 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Sat, 6 Jun 2009 10:38:50 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: o14g2000vbo.googlegroups.com; posting-host=82.20.239.89; posting-account=_RXWmAoAAADQS3ojtLFDmTNJCT0N2R4U User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_7; en-us) AppleWebKit/525.28.3 (KHTML, like Gecko) Version/3.2.3 Safari/525.28.3,gzip(gfe),gzip(gfe) Xref: g2news2.google.com comp.lang.ada:6329 Date: 2009-06-06T03:38:50-07:00 List-Id: On Jun 5, 8:22=A0am, MRE wrote: > The rocket scientist that came to this brilliant conclusion seems to > be a real expert in the field of complexity theory. > Thing is: even if you use analog electronics 50's style you can not be > sure that you have checked all possible combinations of events. I think the difference is that analog systems tend to break in much less complex ways than digital ones. A run-time exception is likely to result in catastrophic and unpredictable misbehaviours. Who would have thought that buffer overflows could lead to botnets overloading the net with spam?