Fountain pen and telescope: what they have in common

1. Step 1. Fountain pen — is made of — Gold. Expensive nibs are gold: it does not corrode and flexes softly.
2. Step 2. Gold — is material for — Dentures. Etruscan dentures were gold bands.
3. Step 3. Dentures — is made of — Bone. With teeth made of bone or real teeth.
4. Step 4. Bone — is material for — Spectacle frame. The first frames were made of bone and horn.
5. Step 5. Spectacle frame — is part of — Glasses. A frame.
6. Step 6. Glasses — evolved into — Telescope. The first telescopes were assembled by spectacle makers.

Open Evothings