Buddy, you have been here longer than me, a total of about 22 months on SS.
What have you learned?
This question is usually asked by people who just find this site.
In buddhism, monks chant and learn from teachers/elders. But, all monks eventually reach a point, where they can no longer learn from others or at least not a significant amount. Once reaching this point, they can only learn learn by looking inwards and experiencing life first-hand. Nirvana is not something someone can teach them; it is something they must find by themselves through experience. Same goes with SS.
You won't be able to learn how to be a dj/alpha simply through reading the dj bible and asking questions. You will only be able to reach that educational peak point. The thing is, you haven't seemed to reach that peak point.
Here's my advice to you...read the dj bible again. Then, try reading the link in my signature. It's a post for people who haven't reached the point yet.
THEN, come back and ask questions.
But since i'm already posting, i'll answer your question...
Think about it. The kids at your school grew up in similar schools and family structures, the majority of them at least. What do you expect?
You watch Dead Poets Society?...They all begin their walks with different styles. But eventually, the other students clap in unison and the three kids begin to walk the same way, same pace, etc. Society preaches conformity. That's part of it. When you see all your friends just chilling, you don't walk over to them and start jacking off or picking your nose or doing some strange ****.
Even the subtlest of movements work accordingly. IN buddhism, again, there is a belief that we are all mirrors reflecting what others want to see. When you point out the inferior qualities of others, you may simply be doing so out of your own insecurity.
ANYWAYS, yes you can read body language. But, as for them mimicking your body language. On a one on one situation with a girl outside of school, then it might be her showing her interest in you and attraction. Though she's already interested so it means ****...
In a school setting, it means ****. I see people "copying" my body language all the time. Humans do many things and act similarly. Get used to it.
