Replacing 1 cashier/bagger with 1 self-checkout station is definitely slower. Replacing 1 cashier/bagger with 10 self-checkout stations with 2 attendants? That

Replacing 1 cashier/bagger with 1 self-checkout station is definitely slower. Replacing 1 cashier/bagger with 10 self-checkout stations with 2 attendants? That'll probably be faster, especially once majority of the shoppers get used to the new system.