Picture yourself walking through a park on a sunny day. As you stroll by the basketball court where shirts and skins are playing three-on-three, the big man in the paint misses a pass. The basketball flies past the baseline toward your noggin. Like most people, you stop short and avoid getting your melon beaned with a Spalding. Most folks could even put out a hand, stop the ball, maybe bounce it once and throw a chest pass to the closest player.

Let’s take a more extreme example. You’re in Pamplona, Spain for the “Running of the Bulls.”