Reusable rocket and screw press: what they have in common

1. Step 1. Reusable rocket — has part — GPS (satellite navigation). Navigation during landing.
2. Step 2. GPS (satellite navigation) — evolved from — Map. Digital navigation on a map.
3. Step 3. Map — includes — Mercator projection. A projection.
4. Step 4. Mercator projection — uses — Gutenberg printing press. Maps were printed in large numbers.
5. Step 5. Gutenberg printing press — has part — Screw press. Gutenberg adapted the screw press known from pressing grapes.

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