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Or perhaps blockchains will lead us nowhere, because they're unaffordable to run? https://www.theverge.com/2019/7/4/20682109/bitcoin-energy-consumption-annual-

• mkr-hn 7y ago
  Proof-of-Work, which is what makes Bitcoin an energy hog, is only one way to do it.
• jonnydubowsky 7y ago
  This author points to the role of often complex monetary policies which can be part of a multi-layered strategy to address the affordability of maintaining the platform. Projects such as Factom, Steemit, Lykke and several others have demonstrated that this is definitely not a binary consideration. There are definitely blockchains that are not sustainable in their design, but there are definitely instances where this is not the case.