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A comment on Bitcoin Takes Bigger Wall Street Stage with Smooth CME Debut. Parent comment

Re:Bitcoin Takes Bigger Wall Street Stage with Smooth CME Debut by runeks on Monday December 18, 2017 @11:32AM (#15952820)
> 51% attacks aren't effective because all they can do is double-spend coins, not arbitrarily reassign wealth.

The only problem Bitcoin solves is double spending. Without this ability it’s worthless.

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Re:Bitcoin Takes Bigger Wall Street Stage with Smooth CME Debut by akvadrako on Tuesday December 19, 2017 @04:45AM (#15958997)
This is completely true. A blockchain that didn't prevent double spending could be both very efficient and support hidden transactions without any tricky math.
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