The Idiot Index and a Chalk Circle: Expertise Means Knowing Where to Draw the Line

Listening to VK Technology Reading Time discuss the Idiot Index passage in the book about Musk, I had another impression: Musk may not be a boss who places much value on other people’s expertise XD. In fact, he seems much like many Taiwanese business owners who complain that lawyers charge too much, accountants charge too much, and all sorts of professionals charge too much. Taiwanese consumers also complain that many things are expensive... Musk’s Idiot Index: ‘Musk listed the material costs of a rocket item by item: carbon fiber, aluminum, copper, fuel. The raw materials accounted for only 1–2% of the finished product’s selling price.’ Musk’s calculation is simple: divide a component’s final cost by its raw-material cost. The higher the ratio, the stupider you are. (Finished-product price divided by raw-material price equals how stupid you are.) But we have also seen another story. A machine breaks down, and neither the owner nor the team can fix it. They call in an engineer. After taking a look, the engineer draws a circle in chalk. They open up that part of the machine, repair the components, and reassemble it, and the machine works normally again. The engineer charges 10,000 for drawing that chalk circle. The owner is shocked: 10,000 for a circle in chalk? He insists on an itemized bill. The engineer writes: Drawing a circle in chalk: $1 Knowing where to draw the line: $9,999 The value of expertise lies in years of professional training, troubleshooting experience (debugging), and precise judgment. What matters is not the line itself, but why it belongs there, the scientific calculations behind it, and the real problem it solves. ----- Those are the two perspectives, side by side.