Crane (ancient) and GPS (satellite navigation): what they have in common

1. Step 1. Crane (ancient) — has part — Windlass. The rope was wound on a windlass.
2. Step 2. Windlass — uses — Wheel. A windlass is a wheel and axle used as a simple machine.
3. Step 3. Wheel — is part of — Lunokhod. Wheels.
4. Step 4. Lunokhod — has part — Smartphone camera. TV cameras.
5. Step 5. Smartphone camera — is part of — Self-driving car. Cameras.
6. Step 6. Self-driving car — has part — GPS (satellite navigation). Satellite navigation.

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