Affecting CoGs in series vice parallel is dramatically more expensive.

Only if you are inept at operational art. How do you know that the cost of firing 1000 cruise missiles all at once to achieve your objective is going to be more successful than firing 100 on 9 consecutive days. or 8 or 7? Boyd discusses this problem in realtion to OODA loops.

Maybe urban legend, but supposedly he tells the story of a dogfight with a new pilot where he makes a complicated series of manuevers, the response to which would lead to Boyd being on the youngsters 6. After completting the manuevers Boyd is horrified to find the younster behind HIM. He asks the youngster how he figured out how to turn the tables. The youngster said "I had no clue what to do, I was gonna go left, then thought maybe right and all of a sudden there you were in front of me!"

You can make the OODA loop so much faster than your opponent that you end up outsmarting yourself, or paralyze him so much that he can't even surrender. With tipping point phenomena, you can't predict how much effect you need to effect the tip, or how much excess you applied after the fact. Sometimes incrementalism is also a political requirement.

Again Warden's argument requires a very determinsitic world view to be correct. There are parts of an adversary "system" that operate that way, but on the whole they do not, and the parts that do may not always be politically acceptable because of collateral effects.

Now these criticisms should NOT be extended to "well, then you must mean we shouldn't even try". Criticism is not condemnation - it is the seemingly obvious caution that we should not try to apply a theory that indeed works against some parts of the some problems, to ALL parts of ALL problems.

Some systems we have to try to understand in their holistic, complete, complex entirety, because simplification introduces errors that render overly simplistic models useless. JUst becasue we want there to be an easy answer that we can apply airpower to simply, quickly and relatively bloodlessly doesn't mean that is possible. Everything we have learned from the last 10 years of war has demonstrated that the heady days of Joint Vision 2010, eliminating the Fog of war and mechnically applying combat power to centers of gravity win wars is folly. Either that or our best and brightest fighting these wars are criminally incompetent for not having achieved our desired endstate quickly and cheaply.

When all is said and done, lets assume Warden is 100% correct. Then what? What changes?

How do we change Joint doctrine to use a language that "enables unconstrained use of airpower"? What things would a Warden designed Air Force do that todays Air Force doesn't do? How does our concept of war change if we assume airpower is a "strategic end-sate generating machine"? How does it harmonize our future growth with China so the rising tide floats all boats? How does it convince Iran to abandon its desire for nuclear power? How does it reduce the strategic risk of our excessive debt? In a multi-polar world what are the end-states we can achieve by compelling, coercing, or denying? Can airpower be a carrot instead of a stick? (other than by giving away!)