On March 30, 2017, Maxim Gromov, an associate professor of the Department of Information Technologies in the Investigation of Discrete Structures, delivered an open lecture in English on the topic "Why do we need testing?" The listeners were lecturers and students (1st and 4th year) of the Faculty of Radiophysics. The lecture dealt with various types of testing and approaches to their application. The lecture was outstanding. The presentation was well-structured, containing a plan, introduction, clear transitions and links between points, strong ending. The speaker showed much interest in his topic. Maxim was very enthusiastic and friendly. The audience was involved and listened attentively. A lot of questions were asked at the end of the lecture. We want to thank M. Gromov for his contribution to the development of the English language environment at Radiophysics department.