In this interview Dr. Jaime Jimenez (National Autonomous University of Mexico) discusses how he brings his training in physics and mathematics to sociology and how the ""hard sciences"" can be applied to the study of social problems. This is part of a series of interviews with the 22 members of the Executive Committee of the International Sociological Association (ISA). The interviews can be found at the ISA website:http://www.isa-sociology.org/