Hairpin and monitor: what they have in common

1. Step 1. Hairpin — is made of — Bone. Ancient hairpins were bone.
2. Step 2. Bone — is material for — Dentures. With teeth made of bone or real teeth.
3. Step 3. Dentures — is made of — Gold. Etruscan dentures were gold bands.
4. Step 4. Gold — is material for — Glucose meter. The strip electrodes are gold or carbon.
5. Step 5. Glucose meter — has part — Liquid-crystal display. A screen.
6. Step 6. Liquid-crystal display — is part of — Monitor. Then LCDs.

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