Who Wants a Lie-Detector App?

In A. E. Van Vogt’s The World of Null-A (1945), every room featured a wall-mounted device that would, when queried, say whether someone was lying. That sounds rather like a nifty add-on for Alexa, doesn’t it? But… Wall-mounted? Or table-sitting? When we have smart-phones loaded with apps to do all sorts of things? Why not […]