The article is only about <i>known</i> bugs that are sitting in a bug database, which makes the entire piece trivial.<p>The main concern in software quality turning unknown bugs into known bugs, not with reshuffling the type and priority fields in a bug database (which is of course important).<p>&quot;Zero bugs&quot; means &quot;exhaustively tested or else proved correct&quot; (given a perfect set of high level requirements and detailed specification to begin with).<p>Any other use of &quot;zero bugs&quot; in a headline is clickbait.<p>The bugs that screw you are the unknown ones. Like security exploits that the Bad Guys find in the field before you do.