I told someone yesterday that there was one piece of technology that was so intuitive it didn’t need an instruction manual. I was talking about the traditional fixed wire telephone.
It turns out I was wrong. A quick search on YouTube revealed there was a major education campaign in the 1920s and 30s, instructing the public how to use a rotary dial telephone.
It’s easy to forget how often people struggle with new technology, and how quickly we learn to use it.