Match and davy lamp: what they have in common

1. Step 1. Match — evolved from — Fire making. A convenient way to make fire.
2. Step 2. Fire making — evolved into — Lighter. A fire striker.
3. Step 3. Lighter — has part — Wick. Petrol lighters have a wick.
4. Step 4. Wick — is part of — Davy lamp. A wick.

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