As time goes by, there are machines such as cassette tapes and steam locomotives that are used much less frequently than in the past. And the same thing may be happening in the world of words. I once had the opportunity to meet up with some old friends, some of whom were in their 70s, for the first time in many years, and we shared a meal and a drink together. When the party was coming to an end, we decided to take a commemorative photo, so I handed my smartphone to the waiter and asked him if the photo had been taken successfully...