Tweezer arms and smartphone: what they have in common

1. Step 1. Tweezer arms — is part of — Surgical forceps. Two springy legs.
2. Step 2. Surgical forceps — is made of — Bronze. Roman surgical forceps were bronze.
3. Step 3. Bronze — is material for — Bell. Bell bronze.
4. Step 4. Bell — is part of — Alarm clock. A bell rings.
5. Step 5. Alarm clock — evolved into — Smartphone. The alarm clock moved into the phone.

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