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: a07f3367d7,20280f498071efd3 X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news4.google.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: "(see below)" Newsgroups: comp.lang.ada Subject: Re: Software Quality in Science Date: Wed, 10 Feb 2010 13:30:17 +0000 Message-ID: References: <1198a288-b013-45a8-907f-7fe227e6294e@m27g2000prl.googlegroups.com> <04185bf3-f83a-4fbe-b380-c6d8aa4105e6@w27g2000pre.googlegroups.com> <87fx59p725.fsf@mid.deneb.enyo.de> Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Trace: individual.net tl93/jf8723eCgRIOjya6gsdyV5RJQPXaYwPH2rjzD5lJRudU6 Cancel-Lock: sha1:9K5/FmUA7flwZ3RX5pTUvNkxZ1k= User-Agent: Microsoft-Entourage/12.20.0.090605 Thread-Topic: Software Quality in Science Thread-Index: AcqqVS7xpbmq1NiI0UyD59yAIkDuYQ== Xref: g2news1.google.com comp.lang.ada:9079 Date: 2010-02-10T13:30:17+00:00 List-Id: On 10/02/2010 13:13, in article 87fx59p725.fsf@mid.deneb.enyo.de, "Florian Weimer" wrote: > * Robert A. Duff: > >>> ...The net result of changing languages appears >>> to be that the overall defect density appears to be about the same, >>> (Hatton 1997). In other words, when a language corrects one >>> deficiency, it appears to add one of its own." >> >> That assertion requires evidence, and I don't see it here! > > (Hatton 1997) is here: > For Ada, it cites Compton & Withrow, "Improving Productivity: Using > Metrics to Predict and Control Defects in Ada Software", in "Second > Annual Oregon Workshop on Software Metrics", Oregon 1990. It then > concludes that language choice had no impact on fault density > patterns. Of course, the evidence is only anecdotal. But surely this is comprehensively falsified by Rational's carefully controlled study? -- Bill Findlay chez blueyonder.co.uk