April 7: API sticker shock, utility tools, KB sync gaps, and machines that make machines

Karpathy details xAI API costs hitting $200 in 30 minutes with fragmented docs while proposing cheap reads and expensive writes for X. Simon Willison ships multiple hyper-specific utilities. Chamath highlights the painful gap in auto-syncing AI chats to structured knowledge bases. Chamath and Jack explore computational metaphors for factories and reality itself. New signals on the practical layers determining AI productivity.