Milton Friedman explains the pencil's global supply chain

HN commenters cite it as the quick, shareable illustration of hidden supply-chain complexity and decentralized knowledge, and bring it up in threads on AI, manufacturing and specialization.

A two-minute clip in which Milton Friedman uses a humble pencil to show how thousands of strangers across many countries cooperate, without central direction, to make a simple product. It is a short visual version of the 'I, Pencil' essay's argument about free markets and dispersed knowledge.