Mouldboard and syringe: what they have in common

1. Step 1. Mouldboard — is part of — Plough. It turns the furrow over.
2. Step 2. Plough — evolved from — Hoe. The plough mechanized loosening the soil with a hoe.
3. Step 3. Hoe — evolved from — Stone tool. Neolithic hoes of stone and antler.
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