User Interfaces Don't Exist

In talking about Simplicity to others, I've found the standard definition of what a user interface is no longer works. We are trapped by the current definition. In fact, I've finally come to the conclusion that user interfaces don't exist. Or, at least, they don't exist in the same way we talk about them. The term user interface implies a single object, a bit of code, which represents everything the user can do with a product. This is misleading and dangerous, because it limits your thinking, analysis and planning about how to design a commercial product.

We need a richer set of words to enable us greater explorations of problems and solutions. I suggest three separate layers ultimately compose the entire user experience: The Presentation layer, the Task layer, and the Infrastructure layer.

From the Book The Simplicity Shift: Innovative Design Tactics in a Corporate World, Cambridge, United Kingdom: Cambridge University Press, 2002, page 27, ISBN 052152749X

Copyright © 2002 by Scott Jenson

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No. 119