Flint and headphones: what they have in common

1. Step 1. Flint — is material for — Stone tool. Tools were knapped from flint and other rocks with a sharp fracture.
2. Step 2. Stone tool — evolved into — Needle. Bone needles with an eye are part of the Palaeolithic toolkit.
3. Step 3. Needle — is made of — Bone. The first needles with an eye were carved from bone.
4. Step 4. Bone — is material for — Bit and bridle. Early cheekpieces were carved from antler and bone.
5. Step 5. Bit and bridle — has part — Headband. Straps on the head.
6. Step 6. Headband — is part of — Headphones. A band that presses the cups.

Open Evothings