Comment Re:"Just" 59K (Score 1) 89
Central banks do a lot of useful things, but they don't give currency a value (they can, however manipulate the value others give it by printing it, destroying it, changing interest rates, changing the amount of reserve banks need and the multiple they can lend, etc). What gives a currency value is supply and demand- the fact other people want that currency. Which is also what sets international exchange rates.
There's also the fact you need it to pay taxes, which sets a base amount of demand. But beyond that it's all supply and demand when deciding how much value it has against other currencies or physical objects.