The FX issue in one chart

We need to look at the  inflection points relative to the blue bars.  In the larger swings, the motion of the FX trade is twice the length of the recession cycle.  FX needs the larger window, it needs to cancel the monopoly effects to two traded fiat currencies.  

We are back to the Shannon band limit conditions, the economy needs to sample foreign exchange almost at twice the rate to be consistent with its external trade. The almost is there because we are optimally congested and will underample slightly.