Smartphone camera and watt steam engine: what they have in common

1. Step 1. Smartphone camera — is part of — Self-driving car. Cameras.
2. Step 2. Self-driving car — uses — Cruise control. Adaptive cruise control is a step towards autonomy.
3. Step 3. Cruise control — evolved from — Centrifugal governor. Early systems were a development of the centrifugal governor.
4. Step 4. Centrifugal governor — is part of — Watt steam engine. Watt used a centrifugal governor to keep the speed steady.

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