The knowledge could be contained in a book yet we would never say a book can drive a car. I know how a violin works yet I would never claim to know how to play

The knowledge could be contained in a book yet we would never say a book can drive a car. I know how a violin works yet I would never claim to know how to play violin and if you put one in my hands it would become painfully clear that I know almost nothing about violins other than some trivia.