Tetris and hammer: what they have in common

1. Step 1. Tetris — uses — Computer. Written on an Elektronika-60.
2. Step 2. Computer — is used in — Flight simulator. Modern simulators are computer-based.
3. Step 3. Flight simulator — has part — Hydraulic cylinder. A motion platform.
4. Step 4. Hydraulic cylinder — is part of — Forging press. Working cylinders.
5. Step 5. Forging press — evolved from — Steam hammer. Pressing instead of striking.
6. Step 6. Steam hammer — evolved from — Hammer. A steam hammer is a hammer lifted by steam, used to forge huge parts.

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