Oof. Exactly. Simple things get complicated when you find out that there were unstated requirements, hidden booby traps, etc. And then there's random interru

Oof. Exactly. Simple things get complicated when you find out that there were unstated requirements, hidden booby traps, etc. And then there's random interrupts -- unrelated stuff that comes up and takes your time and focus. If you run a lean ship then interrupt management is critical, but ideally you can have a few people who are understood to take critical interrupts and thus their schedules will slip.