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=0.4 required=5.0 tests=BAYES_00,FORGED_MUA_MOZILLA autolearn=no autolearn_force=no version=3.4.4 X-Google-Thread: a07f3367d7,11e38e162c16b469 X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII-7-bit Received: by 10.66.88.199 with SMTP id bi7mr313418pab.17.1344571576072; Thu, 09 Aug 2012 21:06:16 -0700 (PDT) Path: g9ni24775496pbo.0!nntp.google.com!npeer02.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!border3.nntp.dca.giganews.com!border1.nntp.dca.giganews.com!nntp.giganews.com!novia!feeder3.cambriumusenet.nl!feed.tweaknews.nl!94.232.116.12.MISMATCH!feed.xsnews.nl!border-2.ams.xsnews.nl!news.panservice.it!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!usenet-fr.net!feeder1-2.proxad.net!proxad.net!feeder2-2.proxad.net!newsfeed.arcor.de!newsspool4.arcor-online.net!news.arcor.de.POSTED!not-for-mail Date: Sun, 05 Aug 2012 12:58:04 +0200 From: Georg Bauhaus User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:14.0) Gecko/20120713 Thunderbird/14.0 MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: A new name for software failure : the glitch References: <2bd4ae1c-c8c7-4553-9f7f-9b6915b30c33@googlegroups.com> <87cbd479-ccb4-4253-9afd-187a1469353b@googlegroups.com> <1ve364clm8rsu.109g7yuz4wkrb.dlg@40tude.net> In-Reply-To: <1ve364clm8rsu.109g7yuz4wkrb.dlg@40tude.net> Message-ID: <501e51bc$0$6549$9b4e6d93@newsspool4.arcor-online.net> Organization: Arcor NNTP-Posting-Date: 05 Aug 2012 12:58:04 CEST NNTP-Posting-Host: 2e6ca888.newsspool4.arcor-online.net X-Trace: DXC=?E^7mHMFXD385[]]\]T0814IUKejV8UBIID;?52n1P[fkET:mOQ2 X-Complaints-To: usenet-abuse@arcor.de X-Received-Bytes: 2179 Content-Type: text/plain; charset=ISO-8859-2; format=flowed Content-Transfer-Encoding: 7bit Date: 2012-08-05T12:58:04+02:00 List-Id: On 05.08.12 09:41, Dmitry A. Kazakov wrote: >> (Now ducking away to write my trading algos in Ada.;-) ) > Ada is not so important as the attitude to the language and software design > it promotes. Regarding this case, I have heard that NY Stock Exchange had introduced a new way of supplying liquidity to which Knight Capital's system had somehow reacted in the wrong direction. A possible speculation about the cause of this failure, then, involves that a piece in the system had been replaced without performing a comprehensive check of the contracts. That is, one piece had either continued trading with outdated assumptions driving it, or had started trading with up to date, but wrong assumptions about the new contracts that would now apply.