I wouldn't be surprised in this case if they were just memorizing the final price of different combinations of orders. I imagine this has a lot to do with the i

I wouldn't be surprised in this case if they were just memorizing the final price of different combinations of orders. I imagine this has a lot to do with the intense time pressure. Often the time to check the computer loses you 5-10 seconds, which in a fast food order environment would make the difference between slow and fast. We saw order pickers that just memorized their pick sheet when it was printed out for them and never looked at it again until they dropped off their pallet. They would also reorganize the pick order in their head for the most efficient route so trying to keep looking at what was an out of order pick sheet was a big time sink for them. So while we were thinking of trying to print the items out in the most efficient order, we realized they were already doing it themselves and wouldn't look at it anyway.