Quote:
Originally Posted by jlevu
Even though it's the same, I'd look at it more like dollars losing value vs the bitcoin. It only makes theoretical sense that producing more of currency a against a constant number of currency b is going to lower the value of currency a vs currency b. How could it not?
Because the value of currency b isn't fixed. Empirically speaking this is obvious, a bitcoin will buy you fewer dollars than it did a week ago for example.
Looking at it a different way, you could say that the entire supply of dollars purchases a certain amount of goods and services, whereas the entire supply of bitcoins purchases a different amount.
(Goods and services all dollars in existence can buy) / (number of dollars in existence) = purchasing power of a single dollar
(Goods and services all bitcoins in existence can buy) / (number of bitcoins in existence) = purchasing power of a single bitcoin
If you tweak the denominators of either currency, the purchasing power changes. Increasing the dollar supply without increasing the bitcoin supply, all else equal, means a bitcoin gains purchasing power against a dollar. But you can also change the numerator, and in the case of bitcoin the (goods and services all bitcoins in existence can buy) is volatile and not guaranteed. It might get less volatile one day, perhaps on a level comparable to USD, but it will still never be guaranteed.