[M_Six]

I defense of cashiers who become lost when you change your initial amount of payment, maybe the machines these days keep close track of cash-in/cash-out? If a report tells a manager later that there should be three $20 bills in the till and there are only two, does it cause a fuss? I don't know for sure because I'm not and never have been a cashier, but just a thought that maybe the payment amount means something to them beyond calculating change.

Or not.