Paved road and gyroscope: what they have in common

1. Step 1. Paved road — is made of — Asphalt. Asphalt.
2. Step 2. Asphalt — is material for — Airport. Or asphalt.
3. Step 3. Airport — uses — Radar. Radars.
4. Step 4. Radar — is part of — Jet airliner. A weather radar.
5. Step 5. Jet airliner — has part — Autopilot. An autopilot.
6. Step 6. Autopilot — has part — Gyroscope. Sperry’s gyroscopes.

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