Re: [SystemSafety] Categorising "errors" [was: Stupid Software Errors]

From: Peter Bernard Ladkin < >
Date: Tue, 05 May 2015 17:07:26 +0200


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On 2015-05-05 13:46 , C. Michael Holloway wrote:
> On 5/4/15 7:21 PM, Drew Rae wrote:

>> Does anyone else find it remarkable that a company is publicly releasing information about a 
>> potential problem with a system, .....

> Yes, I find it remarkable. Getting such information from companies has usually been very hard,
> even with confidentiality and anonymity agreements in place. Rather than lamenting the
> stupidity of programmers, I'm inclined to be celebrating the (rare) openness of the lawyers.

Say I have just discovered a 2038-type "feature" in an airborne system I have delivered. If I tell the regulator who issues a maintenance AD which says reboot the systems regularly, then I don't have to fix it, in fact I don't have to do anything else at all. Furthermore, if someone falls prey to it, it's now their deal for not complying with the AD and no longer my deal for building the "feature" in.

PBL Prof. Peter Bernard Ladkin, Faculty of Technology, University of Bielefeld, 33594 Bielefeld, Germany Je suis Charlie
Tel+msg +49 (0)521 880 7319 www.rvs.uni-bielefeld.de

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