Well OK then, apparently you have not been bitchslapped enough for the evening. So lets put you in your place.
First of course, one has to observe that you are arrogant enough to declare that standard deviation doesnt work. In order to say that you must have a superior knowledge of the concept.
So naturally you would have no problem answering a simple questions about standard deviation. Here it is
Standard deviation is simply the _________ of variance. (fill in the blank).
This is a simple question that any first year student could answer.
Surely you, an accomplished professional trader, who claims to know the limitations of this concept, must know this answer.
I will wait here.
Steve