If you knew you would never be rejected on an approach you would never have AA, alas the world doesn't work like that and you can end up being rejected and sometimes in front of other HB's in a club (dropping your value) and/or in front of your buddys which can be a big knock to your self esteem. 99% of girls won't try to humiliate or bellittle you, they will just act uninterested and give off one word answers to your questions hoping you will go away and you will realise the approach has bombed then skulk off.

Soo...When you start the conversation do not mention or ask what the girl does for a living. Get talking and if the approach goes well thats fine. If however the approach has gone cold then you need to leave with the higher value. To do this ask the girl what her job is. Regardless of what she says (unless it's a joke reply) when she tells you, take one small step backward and if you're holding a drink bring it up to your chest in between the two of you. Reply "oookkkaaay" then quickly follow with "Nice to meet you anyway and have a good night" said in a cheery way. Then turn round and walk back to your buddys.

The reason this works so well is that a lot of a persons identity and self worth is intrinsic to their employment. By rejecting the girl on that precept you are demonstrating higher value than her. The presupposition and frame being-

1/ You saw a girl who looked attractive but beauty is cheap so you went over to screen her.

2/ Upon finding out what she did for a living you automatically disqualified her and cut the interaction short but being an friendly type wished her well and returned to your buddies.

Whereas in real life you blew the approach probably by miscalibrating or using the wrong technique but hey...thats just between you and me.