[drcy]

The answer is never go by just one metric, and it's the fool who uses just one. Just as in science (or authentication) where you never go by one type of test. A metric or scientific test often gives useful, and even essential, information, but you should never come to a final conclusion by just the one.

And when doing or looking at precise mathematical or statistical calculations, keep in mind what Economics Nobel Prize winner Wassily Leontief said: "Page after page of academic journals are filled with mathematical formulas leading the reader from sets of more or less plausible but entirely arbitrary assumptions to precisely stated but irrelevant theoretical conclusions."

Someone just yesterday asked what was my definition of genius, and I said "Someone who sees the forest not just the trees, where others see just the trees." Some would call that enlightenment.