Rates You Can Feel

When an elevator accelerates, your stomach drops because your body senses the rate of velocity change. When a fever spikes suddenly, it feels worse than a slow climb to the same temperature. The rate matters as much as the number itself in how we experience change physically.

Musicians tune by listening for beat frequencies — the rate at which two close pitches cycle in and out of phase. Pilots track their rate of descent. Bakers watch how fast dough rises. Rates of change are not abstract math; they are sensory experiences.