From the timeline of the events, linked to from the article:<p><a href="http:&#x2F;&#x2F;www.seattletimes.com&#x2F;seattle-news&#x2F;doc-timeline&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.seattletimes.com&#x2F;seattle-news&#x2F;doc-timeline&#x2F;</a><p><i>Nov. 3-6: Feuer meets with the IT application manager to discuss the calculation request. Feuer is told a coding fix is scheduled for Jan. 7, 2016, and is informed that the contractual coding developer needed to make the change had been on leave from February to September.</i><p>Seems to be a classic case of the &quot;bus factor&quot; [1] being too low, in this case, only 1.<p>1. <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Bus_factor" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Bus_factor</a>