This. I had a short stint at Papa John's years ago, and when you're faced with a stack of flat boxes that's several feet high, you need to get through them as fast as possible. Square boxes have fewer folds, and thus it'll be easier for the worker on the ground to churn them out versus an octagonal box.I used to fold pizza boxes en masse. It would take soooo long to fold that octagonal box compared to the mere seconds it takes to fold a square one to shape. :O
Also, you can tell who the basic ass bitches are in this thread who are balking at beans on pizza.