It's potentially the case in Melbourne, which is where the outbreak is essentially located, that the cases and potentially most of the outbreak are derived from

It's potentially the case in Melbourne, which is where the outbreak is essentially located, that the cases and potentially most of the outbreak are derived from extensive failures in the so called 'hotel quarantine' system. People have a misplaced belief that given a reasonably competent government you always get competence, which for a variety of reasons was not the case in this particular instance. I think a major planning failure is the result of optimism bias - i.e. that if we decide to do something we can actually do it well consistently.