re: Predict the 12/31/2014 bitcoin price (plus 2013 year in review)

quote:

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Is it if, according to the set protocol, someone or some group can control more than 50% of the mining computing power, that group can override the protocol and rewrite the "rules" for bitcoin?

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I have no fricking clue... I'd like an explanation. The article also talked about being able to use a bitcoin twice in that scenario.

Again, if I mined the bitcoin, stored it in my wallet, how could it be used again by someone else