Yeah, fair enough - I've mostly been responding to too-general comments, the article is more specific. The 911 thing seems like an obvious issue that absolutel

Yeah, fair enough - I've mostly been responding to too-general comments, the article is more specific. The 911 thing seems like an obvious issue that absolutely should have been caught by a rigorous development system; it was treated like a digital phone system instead of a life-saving service. The Therac bug sort of feels like a different story, because that bug led to IEC 62304 - it's older than the practices which would now prevent it. They're both critical systems that were written without due care, though.