The art of engaging UI design

This quote by graphic design legend Paul Rand reflects a fundamental component of successful UI design: "Without content, there's no form. And without form there's no content. When form predominates, meaning is blunted. But when content predominates, interest lags. A work of of art is realized when form and content are indistinguishable. Art is an idea that has found its perfect form." Whether or not UI design or any visual design is art depends on your definition of art. When a UI interface helps a user do, think or feel something that transcends the UI, that's an art-like experience in my book. The best user experiences are when the interface seems to disappear and the user is fully engaged with the desire and purpose that fuels them.