How do I force shutdown a Mac with a T2 or Apple Silicon chip?

Hold the power button down for about ten seconds. That’s the force shutdown on any Mac with a T2 or Apple Silicon chip, including all recent MacBook Airs. It cuts power safely without waiting for the OS to ask for confirmation — useful when you can’t see a dialog box. Don’t bother with keyboard shortcuts unless you’re already logged in; the power button is physical and you can feel it click.