Hmmh, I feel the paragraph with what they saw at some booth at a fair might not be connected to the textbooks, though. Or it's just a different way of phrasing it, I'm not sure. I just hope AI does a good job for the Korean students. I remember we once had a math textbook which was the first run/edition and it still contained a handful of errors. And those were super annoying as a student. I feel that could happen more often with AI.