Stone and multistage rocket: what they have in common

1. Step 1. Stone — is material for — Oil lamp. The first lamps were stone bowls (Lascaux).
2. Step 2. Oil lamp — evolved into — Kerosene lamp. A development of the oil lamp.
3. Step 3. Kerosene lamp — uses — Kerosene. The fuel.
4. Step 4. Kerosene — is material for — Multistage rocket. The fuel is kerosene.

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