1/ Ehhh, I addressed directly Casper’s handwaving attitude regarding “weak subjectivity” or the reliance on social consensus in my thread. @VitalikButerin believes this kind of weakness is trivial. But it’s not.https://twitter.com/VitalikButerin/status/952548219988226049 …
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2/ To have long-dormant nodes or new nodes “ask their friends, block explorers or businesses” to find out which is the canonical chain in a *permission-less protocol* is unacceptable.
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3/ It assumes a) you have some trusted parties you can talk to and b) they are forever alive, available or not compromised.
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Replying to @hugohanoi
Can you describe a plausible world in which this assumption turns out to be false, but you can still safely know what's the right version of the software to download if it's a PoW chain?
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Replying to @VitalikButerin
Hugo Nguyen Retweeted Hugo Nguyen
Already addressed, pls reread. Reliance on social consensus is a spectrum. PoW still requires *some* SC to bootstrap, so what?! PoS needs it more because long-dormant nodes (already downloaded SW) still needs SC.https://twitter.com/hugohanoi/status/952030509047078912 …
Hugo Nguyen added,
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The goal is to minimize social consensus as much as possible to maximize ledger security. It’s not a pissing contest 
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