For some time, I've been collecting news stories about robots and jobs. By robots, I mean almost any automated process that substitutes machines for people. Here are some examples:

• The restaurant chain Chili's installed 45,000 computer tablets in its U.S. locations, says The Washington Post. The tablets enable customers to pay their bills, play games and place some orders.

One hotel is introducing a robot bellhop that delivers items to guests' rooms, reports The New York Times. The same story mentions automated golf caddies. Another Times story reports that the German firm Daimler has demonstrated a self-driving truck.