The other day, on the walk from my daughter’s school to the car, we overheard a teenager listing her instruments: “I know how to play piano. I know how to play clarinet…” My daughter, who’s been studying piano for 5 years, looked up and asked, “What does it mean  to know how to play the piano?” Such a simple question. Such a revealing one. We say “I know” as if there’s a finish line. But most meaningful skills don’t work that way. Knowledge expands. Context shifts. Our craft