The Second Station: why 5x-ing one factory station doesn't save the line

saranormous · x · 2026-11-10

Sarah Armstrong's essay 'The Second Station' on AI robotics go-to-market: speeding a plant's slowest station from 100 to 500 parts/hour yields only 25% line gain when the next station caps at 125—the plant manager will buy someone else's faster second machine, so robot makers must help fill the whole line or rethink flow. On pharma, AI has accelerated target-to-candidate time, but clinics still consume most of a decade and the money; a better molecule only marginally shifts odds. Core thesis: AI's industrial upside is gated by the slowest station, not single-point capability.

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