People talk about how "efficient" ants are. These people do not watch ants.
I just hooked up a new area for my Camponotus pennslyvanicus colony.
The tube was shoved in the sand so only the small workers can fit into the entrance to the new area. (there is food there)
Majors are crowded around the entrance trying to go in, other workers are trying to dig it out so every ant can fit, but the majors are in the way.
It's just like the subway when people won't move from the door.