Given that (I think?) the "OK/Cancel" dialog of the original Mac is one of those 'foundational' UI conventions that was copied pretty directly by every GUI that came after it, I am very curious if our world wouldn't be full of "Do It" buttons if this episode hadn't taken place. Even the Start Menu could have been called the "Do" menu in that alternate universe.

Interestingly, Apple's HIG generally suggest avoiding "Ok" in favor of an action describing what will happen. So save dialogs say "Save" not "OK". The empty trash dialog says "Empty Trash". Still I guess that's more clear than "Do It"

This change most likely happened sometime in the early 1990s, though it’s possible it could’ve happened in the late 1980s. I have a PDF copy of the Macintosh Human Interface Guidelines from 1995 that recommends descriptive button text instead of “OK” and “Cancel.”