My friend Tom went to Tokyo on his first solo trip. He doesn't speak a word of Japanese, so he relied entirely on a translation app. On the second night, he walked into a tiny restaurant with six seats and one chef. He held up his phone and typed "what do you recommend?" The chef read it, nodded very seriously and started cooking. No menu, no questions. Twenty minutes later he put a bowl in front of Tom. It was the best thing Tom had ever eaten. he typed "delicious" and showed him the screen. The chef bowed deeply. Then he typed something back and held up his own phone: "Thank you. My grandmother's recipe. I have not made it for a guest in 11 years."...