Rifle and internet: what they have in common

1. Step 1. Rifle — evolved into — Assault rifle. An automatic weapon.
2. Step 2. Assault rifle — has part — Spring. A return spring.
3. Step 3. Spring — is part of — Rotary dial. A return spring.
4. Step 4. Rotary dial — is part of — Telephone. A dial.
5. Step 5. Telephone — evolved into — Video call. A telephone with a picture.
6. Step 6. Video call — uses — Internet. Transmission over a network.

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