Robot at work

I made a Wal-Mart run for some essential items (wire for face mask nose pieces) and saw a robot at work. It was silently cruising up and down the aisles in an orderly manner. I asked a nearby employee what the robot does. He was puzzled and I had to point out the robot to him. He didn’t know what it was doing–or that it was even a few feet away from him–but he guessed it might be scanning for empty shelves that needed re-stocking. Note: I can’t believe his lack of curiosity! If a robot cruised by while I was at work, I’d ask someone what it does, just because it’s interesting.