Hook shank and steam turbine: what they have in common

1. Step 1. Hook shank — is part of — Fish hook. The rod to which the line is attached.
2. Step 2. Fish hook — is made of — Bronze. Bronze, then steel hooks.
3. Step 3. Bronze — is material for — Heron’s aeolipile. The aeolipile is a bronze ball.
4. Step 4. Heron’s aeolipile — evolved into — Turbine. The aeolipile is the oldest ancestor of the steam turbine.
5. Step 5. Turbine — includes — Steam turbine. A kind of turbine.

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