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A comment on The Blockchain Problem Space – When to Use Blockchain?. Parent comment

Re:The Blockchain Problem Space – When to Use Blockchain? by dividuum on Monday August 14, 2017 @12:06PM (#15009702)
> With ByzCoin, if you can't reach quorum, you can't make progress [...]

This may be a stupid questions, but how does such a system prevent me from adding new nodes, only to remove them all at once if I want to prevent the system from progressing?

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Re:The Blockchain Problem Space – When to Use Blockchain? by bascule on Wednesday August 16, 2017 @11:02AM (#15027984)
The participants in the consensus group are selected via PoW. You would need to control > 1/3rd of them (i.e. 1/3rd of the nodes that have recently won the PoW leader election race/lottery) to cause Byzantine faults.
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