As an aside, I strongly dislike the term UX/User eXperience, it makes no sense to me. I could substitute 'UX' for 'design' above and all would be well in my world.
I might say that the operators of the 3 Mile Island nuclear reactor where having a fine "user experience" because the interface was telling them everything was OK...
User experience is the overall feeling you get from a well combined language, graphic design, sound, motion, information design, interface design, interface design, interaction design and programming.
I might say that the operators of the 3 Mile Island nuclear reactor where having a fine "user experience" because the interface was telling them everything was OK...