Upgraded to macOS Sonoma? You probably noticed by now that clicking on your Mac’s desktop automatically hides all open windows, with the focus moving to your widgets and desktop shortcuts.
This is the new “Click wallpaper to reveal desktop” feature in the new Mac operating system. If you find this functionality annoying, here’s how to turn it off. That way, you can safely click your Mac’s desktop again.

August 30, 1990: A 112-page confidential Apple memo lays out what the company must do to make the Macintosh division a marketplace contender.