I see. You're looking at this third-world problems offering sensible first-world solutions. Thet won't work here. At least not top-down. Too much political corruption (current Brazilian president Lula served jailtime on curruption charges and current Argetinian Vice-President Cristina Kirchner was just sentened for corruption past December).

Only the people can educate themselves out of this mess. But that might be a bridge too far for many.

botsforcash

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Argentina and Brazil Look to Establish a Common Currency | Marcos Falcone

Undisciplined

I get why it won't work, but it seems like politicians would be able to get people on board for something different after the monetary roller coaster you've been on for the past 50 years, especially when you'd be entering the arrangement with the worse monetary situation.