A new app offering to record your phone calls and pay you for the audio so it can sell the data to AI companies is, unbelievably, the No. 2 app in Apple’s U.S. App Store’s Social Networking section.

Learn to make light, but never LEDs. Have you ever stopped to look at a neon sign? I mean really look at one—long enough to notice that it is made of glass tubes intricately hand bent and folded, and ...