Human/Machine Interaction vs. User Experience →
https://marco.org/2009/01/18/human-machine-interaction-vs-user-experience
The Kindle has an overall quite wonderful user experience, even though the first generation’s human/machine interaction was a disaster.
The iPhone/iPod Touch, on the other hand, offers exceptional human/machine interaction—revolutionary, in fact—but that interaction is coupled with a user experience that varies from good to almost hostile.
By Bruce Tognazzini.