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POS vs POW challenges still ahead

https://medium.com/@hugonguyen/proof-of-stake-the-wrong-engineering-mindset-15e641ab65a2

Great write up on the consensus challenges for POS.  POW has proven to work at scale on various cryptocurrencies.  POS still seems in it's academic infancy as far as moving forward into the Proof of Stake less energy utilization world of cryptocurrency and blockchain. 

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