The sheer complexity of many of the systems we're building now really does make them necessary; so many programmers not just building but maintaining such compl

The sheer complexity of many of the systems we're building now really does make them necessary; so many programmers not just building but maintaining such complex systems over such long periods of time, now; the only way to be safe is to be safe. There was a time when good drivers argued that seatbelts weren't strictly necessary if you knew what you were doing in a car, so there shouldn't be laws insisting on them. So if by "strictly", you mean logically possible and sometimes within human ability; yeahbut we now just have to be more practical. No doubt I should have narrowed the scope of the first sentence of my first post; but I'll leave it for now.