Need to have a proper perspective on exchange rate

Comments on Chu Nguyen "Vietnam needs to bring the dong down", 7/07/2015

If I understood you correctly, you are saying that the over-valuation of the Vietnamese dong is 1.002 in December 2014 as opposed to the benchmark of 1.000. That is only 0.2%, isn't it?

If you see how much a currency can change against another in a day, you would probably not say that the Vietnamese dong should be brought down, unless you have a different benchmark.

Further, are we sure that the measurement is so accurate that 0.2% is not within the margin of errors?