very dense and interesting

some highlights

• 90% of US buildings are single family homes
• prefab isn’t cheaper, except fully manufactured homes and mobile homes, which are way cheaper (unclear why (to me), maybe different building codes?)
• construction has just gotten steadily more expensive, despite innovation spreading through it about as fast as agriculture or manufacturing
• china doesn’t build skyscrapers faster than the US
• AT&T spent much more on telephone infra than NASA spent on the Apollo program
• doubling in performance every 2 years isn’t actually that good for early technologies. often much faster
• it takes months for a wafer to go through the whole microchip manufacturing process (in practice — not sure if out of necessity)