Jeans and hammer: what they have in common

1. Step 1. Jeans — is a kind of — Trousers. Trousers.
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 — Hammer. The first hammer was a stone in the hand.

Open Evothings