Wool and sickle: what they have in common

1. Step 1. Wool — is material for — Trousers. The oldest trousers (Yanghai) were sewn from wool.
2. Step 2. Trousers — uses — Needle. Trousers were sewn with a needle.
3. Step 3. Needle — evolved from — Stone tool. Bone needles with an eye are part of the Palaeolithic toolkit.
4. Step 4. Stone tool — evolved into — Sickle. The first sickles had flint inserts.

Open Evothings