“The 2021 edition of the White Paper on Science, Technology and Innovation” states that to realize "the overall well-being of each individual," it is important to utilize convergence of ‘knowledge’ that integrates the ‘knowledge’ of the natural sciences with the ‘knowledge’ of the humanities and social sciences. We asked Osamu Sakura, Professor of the Interfaculty Initiative in Information Studies at the University of Tokyo, who specializes in the relationship between science and technology and society, why convergence of knowledge is needed now and what it means to all of us.