Today Bitcoin is gaining very huge turnover and therefore one can really reason and its global impact on the world economy, Well, for example, replace the dollar Bitcoin still can not, at least in the near future.
I wonder why people keep on thinking and debating on issue about bitcoin replacing dollar when it has been stated bitcoin is best as alternative currency. It make bitcoin to stay away from the noses of this corrupt officials and stay away from the control and centralization. And I think bitcoin will stay that way, being an alternative currency even if it is used as global currency.