Segway and paper machine: what they have in common

1. Step 1. Segway — evolved into — Hoverboard. A simplified Segway without handlebars.
2. Step 2. Hoverboard — has part — Hub motor. Hub motors.
3. Step 3. Hub motor — is part of — Wheelchair. Powered wheelchairs.
4. Step 4. Wheelchair — has part — Ball bearing. Bearings.
5. Step 5. Ball bearing — is part of — Conveyor belt. The rollers turn on bearings.
6. Step 6. Conveyor belt — works like — Paper machine. Fourdrinier’s endless wire mesh moves like a conveyor belt, forming the web of paper.

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