Tank and payment card: what they have in common

1. Step 1. Tank — has part — Gas turbine. Some tanks (T-80, Abrams) have a gas turbine engine.
2. Step 2. Gas turbine — has part — Turbine. A turbine.
3. Step 3. Turbine — evolved from — Heron’s aeolipile. The aeolipile is the oldest ancestor of the steam turbine.
4. Step 4. Heron’s aeolipile — inspired — Vending machine. Heron described both a holy-water dispenser and the aeolipile; the dispenser is the prototype of the vending machine.
5. Step 5. Vending machine — includes — ATM. A dispensing machine.
6. Step 6. ATM — uses — Payment card. It dispenses money for a card.

Open Evothings