The "Sorry, a system error occurred" dialog box is still deeply startling to me after all these years, even when I'm anticipating it. (I caused it to happen by

The "Sorry, a system error occurred" dialog box is still deeply startling to me after all these years, even when I'm anticipating it. (I caused it to happen by moving the System file from the System Folder to the root Macintosh HD and restarted.)