Loom heddle shafts and fitness tracker: what they have in common

1. Step 1. Loom heddle shafts — is part of — Loom. They lift groups of warp threads.
2. Step 2. Loom — uses — Plant fibre. Cloth is woven from threads spun from fibres.
3. Step 3. Plant fibre — is material for — Footwear. The oldest sandals (Fort Rock) were woven from sagebrush bark.
4. Step 4. Footwear — is made of — Vulcanized rubber. A rubber sole.
5. Step 5. Vulcanized rubber — is material for — Fitness tracker. The strap is silicone.

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