I would be interested in hearing HN's take on the matter. I'd imagine the tolerance for bugs in a support application written by IT is higher than the toleranc

I would be interested in hearing HN's take on the matter. I'd imagine the tolerance for bugs in a support application written by IT is higher than the tolerance for bugs in a mission critical defense application. (Not to belittle a support application, in large organizations business logic can be exceedingly, unnecessarily complicated) Overall, what would an acceptable, practical defect rate in IT?