Plier jaws and car: what they have in common

1. Step 1. Plier jaws — is part of — Blacksmith’s tongs. Gripping the workpiece.
2. Step 2. Blacksmith’s tongs — is used in — Forge. The smith holds the workpiece with tongs.
3. Step 3. Forge — is used in — Forging press. The workpiece is heated in a forge before pressing.
4. Step 4. Forging press — uses — Hydraulics (Pascal’s law). Hydraulics does the pressing.
5. Step 5. Hydraulics (Pascal’s law) — is used in — Power steering. Hydraulic power steering.
6. Step 6. Power steering — is part of — Car. Power steering.

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