Anything that we say here maybe don't have significant effect to what will happen in the future, let say we support dollar and say a good thing about it, it will be good sentiment that can make some people to keep save dollar. but country's regulation may bring significant effect that influence people behavior, people who trade in the world market always looking for profit, so I think if a currency can give them extra benefits such as profit, increasing value, or safeness then they will choose that currency.