It also means the OS is in total control of the things it’s running. This goes for running programs, shutting down, and crashing. The only crashes I have on my Linux are when I use up memory, and I’m still convinced that even though everything looks seized up, if I left it for hours or days it would probably end up resolving itself. I’ve had some cases where the OS saw the program wasn’t going in a good direction fast enough and killed it.