Switching off is not the only way for something to be unavailable, at least in the context of the CAP theorem. When a web server is unavailable, it is often bec

Switching off is not the only way for something to be unavailable, at least in the context of the CAP theorem. When a web server is unavailable, it is often because of connectivity problems rather than the server being switched off. In the original example, the neighbors and parents don't turn off either when they are out of sight. They are still part of the collective society, just harder for a specific person to reach.