E = mc² and oil lamp: what they have in common

1. Step 1. E = mc² — is a kind of — Theory of relativity. A consequence of special relativity.
2. Step 2. Theory of relativity — is used in — GPS (satellite navigation). Corrections for the relativistic slowing of clocks.
3. Step 3. GPS (satellite navigation) — is part of — Reusable rocket. Navigation during landing.
4. Step 4. Reusable rocket — is made of — Kerosene. The fuel is kerosene or methane.
5. Step 5. Kerosene — is used in — Kerosene lamp. The fuel.
6. Step 6. Kerosene lamp — evolved from — Oil lamp. A development of the oil lamp.

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