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When I first got into crypto 2 years ago it was a fun opportunity to learn and think about the philosophy of money. It's surprisingly hard to to give a really complete answer to the question "why is money valuable?"
It's not entirely just "because other people think it's valuable," e.g. you can use money to pay taxes and legally settle debts; there's all this legal apparatus around "legitimate" money. Beginning of this @matt_levine column is relevant:https://www.bloomberg.com/opinion/articles/2019-06-18/facebook-will-make-the-money-now …
