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Let's not forget that the Apollo space program used SI units at every step, except for displaying it to the astronauts.
And that a very expensive probe crashed into mars instead of landing because NASA used metric for all measurements but one contractor didn’t get the memo.
Not NASA, but a subcontractor (Lockheed??).
Have you ever done physics with non SI units? It is terrible and causes mistakes
NASA is also really funny and uses millimeters as their base unit for everything.
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