It's the diamond/water paradox. Diamonds are expensive but water is cheap, even though water is much more important than diamonds. https://en.wikipedia.org/wik

It's the diamond/water paradox. Diamonds are expensive but water is cheap, even though water is much more important than diamonds. https://en.wikipedia.org/wiki/Paradox_of_value https://en.wikipedia.org/wiki/Paradox_of_value