A lot of people think that “interaction design” is just making things look pretty, but as the name implies, it’s more about how the user interacts with the design – can they get from step A to step B easily? Does the workflow follow their expectations? Can they figure out what to do next? How many times have you stared at a screen on your laptop or smartphone and said “How do I do X? I should be able to do X from here, shouldn’t I?” Often, in this case, the designer didn’t think through the workflow well enough.