Sakia and syringe: what they have in common

1. Step 1. Sakia — uses — Domestication. It is turned by oxen or donkeys.
2. Step 2. Domestication — uses — Sickle. Harvesting wild cereals with sickles.
3. Step 3. Sickle — evolved from — Stone tool. The first sickles had flint inserts.
4. Step 4. Stone tool — evolved into — Needle. Bone needles with an eye are part of the Palaeolithic toolkit.
5. Step 5. Needle — is part of — Syringe. A hollow needle.

Open Evothings