"Kanban cards were backpressure in physical form: a fixed number in circulation, so upstream could not outrun downstream. Software kept the board and dropped the pressure. With agents producing faster than I can merge, I have to put it back. My card is the PR. https://jonathannen.com/the-importance-of-backpressure/

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Published: 26 Oct 2026 by Jon Williams. Follow me x.com/jonathannen..