Good article. It depends on the definition of “beautiful”.<p>If you care about the looks and want to make it clean, calm, uncomplicated etc - then you end up with user interfaces that are sparse and visually pleasing in an easy way. This works for simple things, but it may make complex work more tedious.<p>If you design for handling complex tasks (an airliner cockpit, a Bloomberg terminal, a digital audio workstation), your beauty standards move much more to usability. It still needs to be visually pleasing, but here with a focus on discoverability and calmness in complexity.