departed Meaning and Definition

...eparted, the conductor comes around collecting tickets. He knocks on the restroom door and says, ""Ticket, please."" The door opens just a crack and a single arm emerges with a ticket in hand. The conductor takes it and moves on. The lawyers saw this and agreed it was quite a clever idea. So after the conference, the lawyers decide to copy the engineers on the return trip and save some money. When they get to the station, they buy a single ticket for the return trip. To their astonishment, the engineers don-t buy a ticket at all. ""How are you go...