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Joined 3 years ago
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Cake day: July 1st, 2023

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  • The inch/cm analogy only works if the conversion rate is fixed. Currencies aren’t like that. Their conversion rates change over time. That changing conversion is part of the return when you compare countries. That’s why you need to put everything in one currency first, then calculate the percent change.

    Your analogy actually proves my point: if the ‘inch’ changes relative to the cm over time, then you’d have to convert all measurements to one unit before comparing how fast trees grow, even though the percent growth itself is unit-free.