My point is that it depends on what you mean by "fix." Is it extremely hard for a person with a unintelligible accent to eliminate it? Of course. Could that sam

My point is that it depends on what you mean by "fix." Is it extremely hard for a person with a unintelligible accent to eliminate it? Of course. Could that same person with a few hours of regular effort quickly make incredible progress (in that most of their peers would go from not being able to understand them to being able to?) I'd have to speculate yes.