As humans, we are good at engaging different kinds of designs with different kinds of actions. Flexibility is in our nature. Yet, there’s something fundamental about us that makes our experience with a design feel natural, or…distinctly off. This talk draws on ecological psychology for insights into how the nature of human behavior impacts experience at this deeper level, and what an ecological approach offers us as designers. We’ll look at ways to tune our designs to our nature so that, however they manifest (back-lit screens, holograms, talking aloud, or any other mode that comes along), and whether we engage them intermittently or rely on them for our usual behavior, they feel not only useful and clear, but exquisitely human.