The biggest liability in crypto currencies is they have an immutable requirement for worldwide ubiquitous internet access.
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When you’re standing at the fruit stand trying to get the last head of broccoli your 11 quadrillion old world dollars worth of tokens locked in your shiny doodad that hasn’t had power in 5 days or network in 3 years will not help you.
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What you really need then is a 1967 US quarter.