@Realpra: suppose someone suddenly came along and bought up half of all Danish crowns. They would suddenly be worth twice as much. Likewise, if someone suddenly floods the market with them, they become worth less. That's the basis of currency exchange.
That is correct, HOWEVER unlike DKK you can NOT "flood" the market with BITCOIN.
To introduce them in a region you would first have to drive up demand and buy some for your people.
The only thing that COULD lower the value would be if the Athenians dumped them as soon as they got them - the BTC value would then go back to normal, not lower though.
This is however unlikely to happen as BTC has a wide range of good qualities.
if a merchant sees demand for bitcoin priced objects increase, he will increase his bitcoin price.
This is incorrect:
1. The cost of converting from BTC to say EUR is pretty low.
2. A BTC merchant may thus only increase his price with the amount of that conversion cost.
3. Should he increase FURTHER people will just convert to EUR and go to his competitors.
So... to get back to the topic. What do ye think then, better to use actual bitcoins, or better to institute a bank which issues as much currency as it has bitcoins in reserve.
Actual bitcoins, most likely on smart cards, would be best:
1. Bitcoin does not hold value in the minds of REGULAR folks yet - a BTC reserve would not impress anyone into accepting the bills.
2. Gold is the go-to reserve/currency builder, in this use it may even beat BTC, at the moment anyway. Additionally, they (Greece) already hold gold! (For now)
3. A BTC backed bill could be taken off the BTC standard and inflated to pay for an oversized government, just as happened with the dollar.
That said physical bills from a government might be some use, like Casascious coins on huge scale.