What does the narrator mean by saying there is not one person in the world who knows how to make a pencil

Friedman uses "I, Pencil," a short story by Leonard Read, to explain how a free-market economy operates, stating there is nobody in the world who knows how to make a pencil. He explains that thousands of people worldwide manufacture the various components of a pencil.

Willingness

Explanation:

This is because there is really nothing you can be ready for.