The question https://ux.stackexchange.com/questions/7174/difference-between-ui-and-ux/ is an extremely important question, but it's an old cast off from Stack Overflow and has been (mostly) answered by Programmers, not Designers. It was migrated here after it was a dead thread.
The accepted answer shows the inherent problem...on a site for user experience design, the "accepted" definition of UI/UX starts with "So it seems like....". Most of the other answers were from programmers and the asker (who accepted a meh answer) is long gone and doesn't even have an account here.
This is an important question and a good version would be a great resource to point people too. Is it worth reasking and closing this question as a dupe? Or should we Community Wiki and fix the answer where it is? Or is it not worth fussing with at all?