Hook-and-loop fastener and hollerith tabulator: what they have in common

1. Step 1. Hook-and-loop fastener — is made of — Nylon. Nylon hooks and loops.
2. Step 2. Nylon — is material for — Electric toothbrush. The bristles are nylon.
3. Step 3. Electric toothbrush — uses — Electromagnetic induction. Wireless charging by induction.
4. Step 4. Electromagnetic induction — evolved from — Electromagnetism. Faraday looked for the reverse of Ørsted’s discovery and found induction.
5. Step 5. Electromagnetism — is used in — Hollerith tabulator. The counters click with electromagnets.

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