1/ Analogies are tricky. When used appropriately, they reduce complex ideas into familiar concepts so that they are easier to understand. Otoh, bad analogies oversimplify things to the point that they lose all touch with reality & confuse more than help.https://twitter.com/TusharJain_/status/972145928902758400 …
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10/ In order to maintain the illusion of immutability, a member has to maintain contact with this group at all time. This is apparent in assumption #3 in the original Ouroboros paper, and the "weak subjectivity" concept Vitalik talked about in Casper- which is a BS terminology.
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11/ When a member of such a group gets detached from the group (maybe for reasons beyond his control), he risks breaking this illusion, each & every time.
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12/ When a temporarily detached member joins back in, he has no way to determine which PoS chain is the canonical chain, unless he has a trusted 3rd party. A PoS system cannot be truly permission-less.
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13/ No matter how many layers of obscurity & bullshit you sprinkle on top, PoS can never overcome this fatal weakness.
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14/ IMO the mistake PoS researchers often make, is to look at Bitcoin as a purely distributed system problem. But Bitcoin is more than that.
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15/ Bitcoin is a distributed system *with physical properties*. You can emulate the distributed components (leader election, randomness, hashing, etc.), but you can’t cheaply emulate physical properties.
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16/ Looking at Bitcoin purely through the lens of distributed system research is like a caveman seeing a stethoscope for the first time & conclude it’s useless for fixing people. Or a medieval man seeing a radio & think it’s a worthless piece of brick.
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17/ The old mental models are usually insufficient to fully understand the significance of new technology.
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18/ It’s kinda sad to see so much time & effort being spent on these PoS systems, that are to me an obvious dead-end. So much ado about nothing.
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End of conversation
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