Sensing needles and boiler: what they have in common

1. Step 1. Sensing needles — is part of — Bouchon’s loom. They pass through the holes and select the threads.
2. Step 2. Bouchon’s loom — has part — Loom. The loom as the base.
3. Step 3. Loom — evolved into — Power loom. A mechanized loom.
4. Step 4. Power loom — has part — Watt steam engine. Driven by a steam engine.
5. Step 5. Watt steam engine — has part — Boiler. The boiler supplies steam.

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