Great response, thank you.

> Does the existence of a seat-belt suppress the "natural heightened attention" (whatever this is) of the driver?

I love this analogy. It neatly highlights that an individual, no matter how "attentive" can still be acted on by external forces. And also, implies that said individual is always affected by those around them, because they share their environment with others.

I find that same have difficult grasping these points, at times.