Lemmings: Customer Edition

I have just finished shopping and am making my way to the cashier. There are two cashier counters open, but for some reason, everyone is only queuing up for one of them. The other cashier is simply standing there looking at the queue and there is no “closed” sign or anything on her counter.

I move to the open counter and hand my purchases to the cashier, and she starts to ring them up without a word. Seeing this, several customers from the long line immediately switch over to my line.

The woman behind me rudely informs me that I was supposed to queue up. I point out that nobody was queuing here in the first place, and she chooses not to reply. 

I guess this is what happens when you simply follow the crowd without thinking.