Egyptian pyramid and newcomen engine: what they have in common

1. Step 1. Egyptian pyramid — uses — Inclined plane. According to a common hypothesis, the blocks were raised on ramps.
2. Step 2. Inclined plane — is used in — Ladder. Climbing to a height.
3. Step 3. Ladder — is part of — Fire truck. An extending ladder.
4. Step 4. Fire truck — evolved from — Fire pump. A pump on a motor-vehicle chassis.
5. Step 5. Fire pump — has part — Piston pump. A fire pump is a piston pump.
6. Step 6. Piston pump — is part of — Newcomen engine. The beam drove a mine pump.

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