You are in a very long line. A new line opens with cashier saying I can get whoever is next. Person in front of you is and goes. Then, person BEHIND you bee-lines it to that line even though you are supposed to be next. You are still standing in the original line. Who should be served? (I am not talking about being in stalls with buggies. I am talking about being at the post office or at the customer service desk.)