I just published “Feedback Loop vs. Circular Reasoning”https://medium.com/@hugonguyen/feedback-loop-vs-circular-reasoning-1544ae7fd457 …
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Furthermore, even if a PoS protocol manages to generate internal randomness, it might still be insufficient for chain security, because PoS focuses on only the superficial role of randomness. (As you mentioned, there's no "value" moved into the system.)https://twitter.com/hugohanoi/status/1040494231528173568 …
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(Not that I think PoS can actually generate internal randomness.)
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Put another way: external source of randomness via Proof-of-Work is probably the only way to securely inject randomness into a public & distributed blockchain.
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He has to have control of ALL signing nodes in the group...
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Last I checked, he only has to control 201 out of 400 nodes? (400 being the default DFINITY group size)
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