I think women types exist. Most of healthy women have three stages – they are oriented on `choosen one` first, then on alpha, then they imitate. As a result women find different men in different age.
America is in Postmodern. One can say in Postindustrial. Russia is in Postinformational

But I think, that caste restriction exists in almost every society.
I don`t think that women have very whimsical psyches. I think they have programs, which are strong predictable.
citation from my book:
Irrationality is most often seen in the woman’s adherence to her biological programs. These programs are simply unknown to most people. For instance, a woman fulfils the correct program of changing her partner. ‘The Princess has run off with the stable-hand!’ The program has rationally and pragmatically assessed the chances of quality procreation and decided that the stable-hand’s potential is greater than that of a prince. From a distance it may look as though the ‘princess has fallen head over heels in love’, but this love and these actions are rational.
It is only about healthy women with working programs.
And I think that PUA tactics have two very useful concepts: `suppressing of shyness` and `list of typical errors of men`. The other concepts are doubtful.