It's a way of making your target qualify and invest in you. The more you devalue her, the more she tries to raise that value by qualifying herself. At the same time she sees/feels her value relative to yours, and since she's too busy defending herself your value stays the same while hers plummets which makes you high value in the interaction. Basically neg theory taken to the extreme.
The more she qualifies the more invested she is. She's pouring her heart out to someone who's basically being an ass to her and she can't feel but be attracted. This works really well on girls with low self esteem and those with emotional problems...which is like 50% of all hot chicks. Thus you see the jerks and assholes scoring mega hotties while the nice guys get LJBF'd or ignored. It's not confidence, it's perception and stupidity.
God sure wired women funny.
