I think we should reach some level of concensus here.
Confidence alone doesn't makes PUAs succeed. Neither do Skills. When you have both in adequate proportions you can get girls. Here we disscus the "science"(art?) of picking up women. That means: to attract and seduce them. We can't seduce a girl if attraction isn't built. I belive that the primal force that drives any human sexual interaction is attraction. Any PUA in field knows that without attraction is impossible to get a target. I hope my point is clear enough (repeated the same many times

).
So....
Attraction is what makes Pick Up work.
Confidence and skills are just means to obtain an objective. You need confidence to aproach a girl, I agree on that one, but thats just willpower. Without willpower: I would not be able to aproach women, or even eat by myself. So don't overrate confidence, its not the primal force behind sexual interactions.
Attraction is nature's mechanism to make animals (and people) have sex and reproduce. In my original post I explained what evolution wants from us, a set of traits that make a girl wanna have children with a man. Many of those traits involved making the survival rate of the offspring the maximun possible. For humas the traits were those of a "good husband" with position and value.
Some of you posted that social settings and culture affect the attraction swichtes. Maybe girls just wanna have fun, Right?. So the good husband traits ate useless on girls that don't want to get into a long term relationship.
There are some evolutionary theories that hold a much more promiscuous scenario. Personally, I liked the good husband theories because my game fits better on it. (Don't get me wrong, I don't want to get married with any girl I pick up, I just use the stuff that works for me)
If someone has a theory of the evolution of attraction (when having multiple sexual partners increase survival of children), please let us read about it. That way we could have two different sets of traits, and see wich ones are common. So we could know wich work on field, and maybe even settle an academic debate.