Shut down is in the Finder, in the “Special” menu. That’s an evolutionary left-over from the first Mac. It ran only a single program at the time [1]. It booted

Shut down is in the Finder, in the “Special” menu. That’s an evolutionary left-over from the first Mac. It ran only a single program at the time [1]. It booted up running the Finder. From there, you could launch a single program. If you quit that program, it launched the Finder again. [1]: except for desk accessories, a special kind of device driver (!) that could present an UI (https://www.folklore.org/StoryView.py?project=Macintosh&story=Desk_Ornaments.txt https://www.folklore.org/StoryView.py?project=Macintosh&stor...)