Harpsichord and rope: what they have in common

1. Step 1. Harpsichord — evolved into — Piano. Hammers instead of plucking.
2. Step 2. Piano — is made of — Felt. The hammers are covered with felt.
3. Step 3. Felt — is a kind of — Textile. Felt is cloth without threads: wool is matted until the fibres lock.
4. Step 4. Textile — is material for — Parachute. A parachute canopy is sewn from light, strong fabric — first silk, later nylon.
5. Step 5. Parachute — has part — Rope. The lines are ropes.

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