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Nouriel Roubini or Dr. Doom as he’s also know has united the crypto community the past week. He has been very active in attacking the crypto community without having any of his facts right. His attacks on the crypto community escalated with him challenging Vitalik to a debate.
See the full story on Humble Oracle :
https://humbleoracle.com/2018/10/16/dr-doom-vs-vitalik-buterin/