From atoms to galaxies, everything is in motion. Flowers sway in the wind, blood circulates through our bodies; even the continents “drift.” Motion is an inherent part of the world. To describe these motions, we have come up with a variety of terms: flowing, vibrating, slipping dripping, running, squirting, oozing, seeping. Each term conjures up some specific type of motion and immediately we understand the type of movement described. In fact, our associations are so strong that if during a heavy rain someone were to tell us nonchalantly that there was water “gushing” through the roof (rather than leaking), we would certainly wonder why they did not seem too concerned.