Okay, I develop over 10000 displays a year, multifunctional displays, interactive displays, testing, and NEVER have I said at work UI or UX or brought up these questions to anyone. You'd be laughed out of the team if you talked like this on my projects.
Good point. These terms did not even exist a couple of years ago. Interesting how UX and UI became so popular with the invention of smart phones and mobile devices.
