Lets say the Greek prime minister advises Greek citizens to turn to bitcoin. They arrange to help everybody including grandmas to convert their euros to bitcoin. (I know I know. Never in a million years)
So bitcoin is the national currency of greece. All transactions in greece are carried out in bitcoin. Can the network hack it? What would happen?
If bitcoin will be the national currency of Greece it will be another bankruptcy. This time of the Greek State. This State at least will not have the bitcoin needed to pay the salaries to the State employees and the pensions to the pensioners. Then will don't have bitcoin to do economic activity (various investments etc) and to pay the salaries of the military troops (that are not few). Then, I don't know where needed other places when the State need to spend or to have money. They will not have bitcoins to satisfy these needs.
The Greece State don't have money to buy bitcoin for its economic state needs. So will bankrupt.
sure it will they spend more money they can earn or gather from summer holidays, also if im not mistaking there are the only one country that have 15 or 16 paycheck in year (12 month + new year + vocation + additional income)
if they adopt they will be sold not bankrupt.