"Measuring" brings to mind the "measuring stick" (Canon). Is that more than coincidence? Is there a relation in the Greek, or is it just a quirk of the English?
It does seem to me that the faculties of the Canon are quite useful in judgments of the type being discussed.
On thinking further, back in ancient Greece divination was common (and I need to do more research to find out more about how common it was). So having a method of making good choices and avoidances would have been of utmost importance in order to counter any urges for using superstitious divination.