I agree it's pseudoscience. But trying to psychologically profile your mark before talking to someone is still weird and creepy. This is far more than seeing if a chick is receptive to being picked up at a bar on a Friday night. It's seeing her at a happy hour a week earlier and then planning for the rest of the week all the strategies to get her to go home with you on Friday, including stalking her social media, following her around to determine her grocery times, etc.