The serious lesson of the antics in Argentina, then, is that the big issues of monetary economics--fixed vs. flexible exchange rates, whether countries should have independent currencies at all--are still wide open.
Some people are debating if currencies should be independent.
These  (1) certain pension consultants, (2) nationally recognized statistical rating organizations, (3) certain advisers affiliated with SEC-registered investment advisers, and (4) newly formed advisers that have a reasonable expectation of becoming eligible for SEC registration within 120 days.