Once again, China's attempt to devalue the yuan has been greeted with sheer market panic. Lacking better economic data, markets interpret the devaluation of the yuan as an implicit acknowledgement by the Chinese government that the country is headed into a downturn.
There is, however, a simpler and less malignant interpretation, and one that deserves a hearing: China is fixing an earlier policy mistake, and that's good news.
In the summer of 2014, when oil prices tanked, every major U.S. trading partner—bar China—devalued against the dollar. Quite often, a strong dollar is brought about by global economic weakness. If investors are worried about a recession, they seek refuge in the dollar and U.S. government securities. This time, however, the dollar rallied due to the strength of the U.S. economy, specifically, the effect of shale oil production on U.S. terms of trade.