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hugohanoi's profile
Hugo Nguyen
Hugo Nguyen
Hugo Nguyen
@hugohanoi

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Hugo Nguyen

@hugohanoi

I chain, therefore I am ⛓️

Joined April 2012

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    1. Hugo Nguyen‏ @hugohanoi Apr 8
      Replying to @jaekwon @lightcoin @NickSzabo4

      Ok I re-read, so Tendermint won't fork in the case of a network partition taking away 1/3+ of the active validator set, because you simply choose to HALT the chain instead of continuing on with the forks. (I admit I don't always remember which PoS implementation does what).

      1 reply 0 retweets 0 likes
    2. Hugo Nguyen‏ @hugohanoi Apr 8
      Replying to @hugohanoi @jaekwon and

      But by choosing to halt, you’re just trading one problem for another. If you would have chosen liveness instead, then you’ll have a problem with (b), but now instead of (b) your chain faces the risk of regularly starting & stopping.

      2 replies 0 retweets 0 likes
    3. jae kwon‏ @jaekwon Apr 8
      Replying to @hugohanoi @lightcoin @NickSzabo4

      CAP says you need to choose, there’s no way around it. For financial blockchains the right choice is to halt at least temporarily. Bitcoin chooses “liveness” but really it’s just asking for mass chaos once the partition heals.

      1 reply 0 retweets 2 likes
    4. Hugo Nguyen‏ @hugohanoi Apr 8
      Replying to @jaekwon @lightcoin @NickSzabo4

      I disagree. It might appear chaotic but PoW provides a significant breakthrough over traditional BFT systems in this aspect: the chain-split healing process is deterministic, automatable & not corruptible by humans. (Not to mention how PoW shields you from long-range attacks.)

      1 reply 0 retweets 0 likes
    5. jae kwon‏ @jaekwon Apr 8
      Replying to @hugohanoi @lightcoin @NickSzabo4

      You just agreed that safety is the better choice. You can have even better chain healing with PoS. The best part of PoW is it’s distribution mechanism, but that’s been exploited to capacity now.

      1 reply 0 retweets 0 likes
    6. Hugo Nguyen‏ @hugohanoi Apr 8
      Replying to @jaekwon @lightcoin @NickSzabo4

      No, I only agreed that choosing safety over liveness is probably the correct choice *in PoS or traditional BFT systems*. Not in Bitcoin. Because of PoW, Bitcoin can afford to have both.

      1 reply 0 retweets 0 likes
    7. jae kwon‏ @jaekwon Apr 8
      Replying to @hugohanoi @lightcoin @NickSzabo4

      Take off those glasses, you’re talking nonsense now. Good night.

      3 replies 0 retweets 0 likes
    8. Hugo Nguyen‏ @hugohanoi Apr 8
      Replying to @jaekwon @lightcoin @NickSzabo4

      I'm speaking objectively, no colored glasses here 🙂

      1 reply 0 retweets 0 likes
    9. Hugo Nguyen‏ @hugohanoi Apr 8
      Replying to @hugohanoi @jaekwon and

      Bottom line is this: PoS provides no real breakthrough over traditional BFT systems & are constrained by the same CAP theorem. PoS is just re-inventing the wheel all over again, using a different language. Bitcoin is able to "cheat" CAP via PoW - that's the real breakthrough.

      2 replies 2 retweets 4 likes
    10. Hugo Nguyen‏ @hugohanoi Apr 8
      Replying to @hugohanoi @jaekwon and

      By "cheating" I mean Bitcoin doesn't _really_ give you the C in CAP - consistency. But it's close.

      3 replies 0 retweets 0 likes
      Hugo Nguyen‏ @hugohanoi Apr 8
      Replying to @hugohanoi @jaekwon and

      Hugo Nguyen Retweeted Hugo Nguyen

      https://twitter.com/hugohanoi/status/982908710832848898 …

      Hugo Nguyen added,

      Hugo Nguyen @hugohanoi
      Replying to @hugohanoi @jaekwon and 2 others
      Essentially, Tendermint’s preference for "safety over liveness" eliminates (b) but the risk of (a) is now multiplied several folds. My larger point remains: not as robust as PoW.
      2:55 AM - 8 Apr 2018
      0 replies 0 retweets 0 likes

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