Prognostico the Great predicts the future, circa 1969

In the year 2021 people will be able to go into a phone booth and make a telecall where you can see the other person on video. No — even better — phones will be so portable that you can make a video call from wherever you are — anyone can, not just Dick Tracy.

You’ll be able to pop some food into the over, press a few buttons, and have your hot meal ready in just a few seconds.

Cars will have autopilots so you can park or cruise down the highway without thinking about it. Books will be...