I am on the first chapter and one thing which always bothered me was the example in first principles thinking. Farnam Street did and so did you in the book. Te

I am on the first chapter and one thing which always bothered me was the example in first principles thinking. Farnam Street did and so did you in the book. Tesla and Musk, in spite of their success, might not be the best of examples. While the material breakdown cost give us an elemental view of what goes in - the actual cost is on R&D. Putting together the $80 material while ensuring the costs are down is something which might be doable only with huge amount of money. I don't see how it helps average Joe.