"Here’s how I like to think about it: Every object emits a habit field. When we sit down at the desk in our office to work, we shape its habit field into a productive one. When we sit down in a lounge chair to watch our favorite TV program, we nudge the chair’s habit field toward relaxation and consumption. The more we repeat the same activity around an object, the stronger its habit field gets. And the stronger its habit field gets, the easier it is for us to effortlessly fall into that mode of behavior the next time we’re around the object."

And computers have a fuzzy habit field because we do so much with them. It's easy to only use a book for reading or a notebook for writing, because that's all you can do with them. Computers make it hard to focus on work when we do stuff other than work on them.

Craig Mod talks about applying book design to e-readers and introduces Bibliotype