July 18, 2021
While the illustration of the range of いいです is mostly good, I found the examples at the convenience store especially frustrating. It can in fact be really difficult to tell the difference between "No thanks, I'm good," and "Yes please," and the book basically does nothing to clarify it. I think you're supposed to be able to tell from the customer's tone of voice but the rapid transitions and the lack of any feedback on which interpretation is correct don't help. They could have at least used some variations with "いいですよ" and "いいですね” which is much clearer.