The book "Epistemological Aspects of Computer Simulation in the Social Sciences" offers a comprehensive collection of epistemological perspectives on computer simulations in the social sciences. It is based on the revised versions of invited and selected contributions presented during the second EPOS workshop in Brescia, Italy, in October 2006. This workshop, initiated by Ulrich Frank and Klaus G. Troitzsch, promotes interdisciplinary exchange among scholars from various fields, including social sciences, computer science, engineering, and natural sciences. The contributions reflect the methodological and epistemological foundations of simulations as a research tool and illuminate topics such as the connection between theory and simulation models, as well as the empirical validation of agent-based models. The discussions and insights from the workshop contribute to understanding the role of simulations in research and analyzing their impact across different disciplines.