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I'm having hard time understanding about fork. I need it in layman's term

Usually the expectation with a hard fork is that one side of the split chain will become dominant and the other will die off or possibly live on as a cheap alt coin. The risk is this might end up in two incompatible currencies that both think they are the original coin. A hard fork requires all nodes to upgrade and agree on the new version while on the other hand a soft fork requires only a majority of the miners upgrading to enforce the new rules.

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