A brick can't fix itself in case of problems. Just grab a brick, put it in a corner of the room and you'll see. It stays there doing nothing, it's kind of amazing how little it can do.
I would love to see a picture of your computer pulling itself up by the straps on its physical boots the next time you press reset. Bleeding when a process is "killed".
Even something as superficially similar to real-world behaviour a "queueing" is implmented in a very different way in software, for the most part.