Last week, Hisashi Ohtsuki from SOKENDAI (the Graduate University for Advanced Studies) in Japan visited the lab. Hisashi studies evolutionary game theory and has been collaborating with us over the past few years on related problems, resulting in a publication led by Nadiah Kristensen last year. During his visit, Hisashi gave the departmental colloquium, engaged with students and staff in the lab and the department more broadly, and worked on our ongoing collaborative projects.