Subtle? Nothing subtle about it.
You said something about it being flawed, got challenged to demonstrate why it is flawed, responded by making a vague statement about 'lots of external factors' which is irrelevant to the question you got challenged on and you blabber out something about a counter-argument, only to finish off by asking me to show you how it works after you've stated it is flawed!
![LoL :lol: :lol:](/images/smilies/lol.gif)
There is no argument thus far. I'm not arguing anything. I'm waiting for you to present a shred of understanding of the metric and tell me how it is flawed like you said it is.