Originally Posted by
Nialler
I've never ever seen a piece of bugfree software in 30 years of working with mission-critical systems.
You can write bug-free software, so long as it doesn't have to do anything useful. And, even if the software doesn't have bugs, the hardware it's running on does. And, even if the software doesn't have bugs and the hardware doesn't have bugs, the specifications for the software have bugs. And, even if none of them have bugs, the other systems you're talking to have bugs.