re: #228 HappyWarrior

Great point about grocery cashiers. They had self checkout when I bagged in high school. Still cashiers over a decade later.

Because it’s faster to have a cashier who knows how to process the items for checkout than for someone to futz over a machine and requires assistance in trying to get something to scan or manually enter the SKU or ISBN or other code. And in the grocery store business, speed to process at the front end is critical to keeping store flow going. Costco actually has a metric at their stores showing how fast/accurate their cashiers/staffers are, and rewards those who do a better job.