[TexasGunLover]

And you geniuses so dismissive of the brain power of fast food workers would be fired off your first shift, because if you work the drive-through window, you have to be able to make change in your head. Most people in loftier professions can’t. I know this from experience.

Have you seen modern POS machines in the last 15 years? I have, and develop software for them. They all make change automatically, and most chain stores' POS's even eject the correct change.

[Blue Ink]

At a drive-through window, you add up the ticket (with the register) as they order, then before they actually arrive at your window, you take the next order. You don’t know what bills you’re going to be handed from the car three cars back.

When they get to the window, you look at the receipt tape, tell them their total, and make change from the twenty or the ten or whatever they hand you.

At the counter, the register makes change for the employees, but at lots of older fast food window set-ups, you have to make change in your head.