You feel the hum of a well‑tuned engine, then you feel a patient’s heartbeat syncing back to normal. Both are the same rhythm of motion and life. When I tighten a bolt I think of the little nerves in a body that need a steady hand. The trick is to listen first—watch the pattern, feel the vibrations—then act with precision. That’s how a repaired machine and a recovered patient both breathe again. And a little bit of grease or a soft word can make all the difference.