INFIELD VIDEO HERE: https://www.youtube.com/watch?v=-6dZ7ln ... e=youtu.be
Here's my presepective:
In a standard situation, if the girl leaves the interaction: the correct response would have been to either (A) keep on eye on her and wait till she sits down and then reapproach her or (B) follow after her and stop her "dead in her tracks".
Now although following after her would destroy my value and make me a bit creepy: I'd say it's still worth it because at least now I have a chance with her. While, if I don't reapproach her then she's gone forever and I have 0% of getting her. In regards to the value loss caused by me opening her twice, I'll have to use really strong disqualifiers, teases and perhaps negs to regain my value.
However, in this situation my rationalization for not reapproaching her, right away was because there were many other pretty girls in the room who were watching and if she were to reject me (after I walk upto her) infront of them then I'll lose my chances with all the girls in the room.
IOI Pinging is a very interesting notion. It's testing to see if the girl will be responsive to me or not. It's a preapproach that prepares you for the real approach later on.
I agree with Jeff that my main problem is that I'm not direct enough and I don't state my intent. However, this is intentional in a college enviornment (where gossip runs rampant) because I don't want to be seen as the sleazy pickupartist who has a crush on everyone. Nevertheless, perhaps I should have used a semi-direct opener like "You have a nice style." Which is a level below "You look cute.

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I don't understand why opening up a girl in a high-pressure enviornment (where there are a lot of people watching) is different than a low pressure enviornment. If someone were to explain the game differences to me, I would be grateful.