ATM and watt steam engine: what they have in common

1. Step 1. ATM — is a kind of — Vending machine. A dispensing machine.
2. Step 2. Vending machine — was inspired by — Heron’s aeolipile. Heron described both a holy-water dispenser and the aeolipile; the dispenser is the prototype of the vending machine.
3. Step 3. Heron’s aeolipile — evolved into — Turbine. The aeolipile is the oldest ancestor of the steam turbine.
4. Step 4. Turbine — is part of — Ocean liner. Large liners run on steam turbines.
5. Step 5. Ocean liner — evolved from — Screw steamship. A large steamship.
6. Step 6. Screw steamship — has part — Watt steam engine. A steam engine or turbine.

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