Makoto Hayashi is Professor in Teaching Japanese as a Foreign Language at Nagoya University, Japan. His research interests revolve around the issue of how we can re-conceptualize what we think of as grammar by exploring the mutual bearing of linguistic structures and the organizations of social interaction. He has published books and numerous journal articles on such topics as self-initiated/other-initiated repair, anticipatory completion, question-answer sequences, multimodal practices, and epistemics. He also co-authored one of the first textbooks of CA written in Japanese, Kaiwa Bunseki Nyûmon (“An Introduction to Conversation Analysis”; with Shuya Kushida and Takeshi Hiramoto, 2017). Makoto serves as an editorial board member for Research on Language and Social Interaction and Interactional Linguistics, as well as for John Benjamins’ monograph series, Studies in Language and Social Interaction.