Seems most people here think like I do, that dollar value doesn't have an impact on Bitcoin value. I have asked myself this a few times, and it seems to be true, in a sense, because Bitcoin value against other pairs of currency are actually just the same if you equate it against USD. I do wonder if USD becomes extremely volatile or loses a great amount of value, how would or who would make the decision to change the pair it is valued against?
For example, in Zimbabwe, it is against dollar value because the local currency deactivated. Who actually determines that?
I don't believe that the dollar has any kind of impact on the bitcoin's value and I will explain why.
Bitcoin is being traded in a large amount of exchanges among the world, which means that it is being traded for a large variety of coins, if the USD goes down, it won't affect the price of bitcoin against other currencies( for an example, BTC/EUR, BTC/CNY,BTC/JPY).
Because the price of bitcoin against other currencies will remain constant, it will make the price of bitcoin against USD go higher.
It WILL affect the bitcoin price against dollars, but won't affect it's value, as dollar go down, but bitcoin goes up against the dollar.