Queues Again

Another very short queue in from of us where the others were long so we opted for that of course like a whippet after a rabbit. Another big wait as the elderly person in front wanted a glass of water. Everything evolved around taking care of this person now as a chair was brought along and all the surrounding staff pampered her. All her shopping, which wasn’t much was left unattended why shoe was being nursed. In the meantime all the other queues moved along and we again were stuck with the goods on the conveyer. We felt sorry for the woman but why does this always happen to us when we choose the shortest queue?