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 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,5412c98a3943e746 X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Received: by 10.68.235.4 with SMTP id ui4mr442010pbc.3.1331205834784; Thu, 08 Mar 2012 03:23:54 -0800 (PST) Path: h9ni2182pbe.0!nntp.google.com!news2.google.com!goblin2!goblin.stu.neva.ru!feeder.erje.net!eternal-september.org!feeder.eternal-september.org!mx04.eternal-september.org!.POSTED!not-for-mail From: Simon Wright Newsgroups: comp.lang.ada Subject: Re: Verified compilers? Date: Thu, 08 Mar 2012 11:23:53 +0000 Organization: A noiseless patient Spider Message-ID: References: <15276255.3865.1331124143041.JavaMail.geo-discussion-forums@vbze11> <87d38nv4zf.fsf@adaheads.sparre-andersen.dk> <1akg43pmlpmk0.1h690opfybkew$.dlg@40tude.net> Mime-Version: 1.0 Injection-Info: mx04.eternal-september.org; posting-host="dFCm8HWntFqmDIilBLqEJQ"; logging-data="2025"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18mrH8n3KR4yI9VSWEFCYIXgw9H4DE7Aek=" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (darwin) Cancel-Lock: sha1:WJD3z4/Kmn0NNm+w+yWjP+d8J80= sha1:GOX9JJTbW0W8Jn6NCuXRCgpORgk= Content-Type: text/plain; charset=us-ascii Date: 2012-03-08T11:23:53+00:00 List-Id: "Dmitry A. Kazakov" writes: >> Oh. And who verifies that the silicon is correct? > > Well, that is much simpler. Since silicon is a physical device > statistical models work pretty well there. You can probably tell if the silicon has become broken. It's harder to tell whether the silicon has a design error.