Moving to America from France, one of my biggest surprises was how poor the average engineer (person really, but engineers affect me directly at work) is at summarizing concepts clearly.
I learned a little later that "summary" exercises are not a thing taught in school here, which surprised me. In France, "le résumé" is an exercise that they constantly drill into students (particularly technical ones), in which you take a 3 page paper and condense it into 100 words. I really hated doing it back in the day, but as an adult I now am very grateful I did and wished other countries made this more prevalent.
I learned a little later that "summary" exercises are not a thing taught in school here, which surprised me. In France, "le résumé" is an exercise that they constantly drill into students (particularly technical ones), in which you take a 3 page paper and condense it into 100 words. I really hated doing it back in the day, but as an adult I now am very grateful I did and wished other countries made this more prevalent.