In what way? I would really like to hear you explain how they revolutionized supermarkets. I use them every day, and my shopping experience is served far bett

In what way? I would really like to hear you explain how they revolutionized supermarkets. I use them every day, and my shopping experience is served far better by going to a place that is smaller than one that has automated checkout machines. (Smaller means so much faster.) Hell, if you go to Costco, the automated checkout line moves slower than the ones manned by experienced workers.