Interface Design for Non-Interface Designers (Jordan Koschei)

Interface design requires a different mode of thinking than traditional design. 

This may seem counterintuitive at first. After all, design is design – whatever the medium, it requires a similar focus on problem-solving and empathy for the user. Superficially, a website or app looks a lot like a print layout, but the core behavior towards each is fundamentally different. Interface design more closely resembles architecture or industrial design in that its results are meant to be used, not observed. (jordankoschei.com)