That is not satisfactory. Some instances of software are more crucial than others eg. software running money transfers must have less tolerance for bugs than a game I play on my phone. The question is not whether software works most of the time, but how badly things go wrong when mistakes happen.<p>Here&#x27;s an analogy: A weather forecaster can predict &quot;no hurricane&quot; every single day and have a near-perfect success rate. Needless to say, that&#x27;s next to useless. (False positives and false negatives have wildly different costs in this context.)