> You could have an interface on a car that is almost entirely touch screens. You might see replacing the steering wheel with a touch screen interface. That wou

> You could have an interface on a car that is almost entirely touch screens. You might see replacing the steering wheel with a touch screen interface. That would be consistent but not a good mapping to people's mental model. Consistency means that users can expect the same behavior from elements with the same specific purpose. When you put steering wheel and infotainment system in the same classification bucket, it is not consistency, it is excessive abstraction.