The WSJ’s Farhad Manjoo set out to find a place where humans in the workforce are still managing to outdo their robotic counterparts. He found that cashiers at grocery stores still beat those digital self-checkout machines. Of course, those self-checkout machines aren’t exactly robots, and their major flaw is that they require shoppers to do something. Several years ago, my friend Jeff O’Keefe wrote a great supermarket of the future spot for IBM. It’s a vision that doesn’t seem that far off now, and it takes the self completely out of the self-checkout process.