Exploratory of society L.-E. Cederman, R. Conte, D. Helbing, A. Nowak, F. Schweitzer and A. Vespignani Eur. Phys. J. Special Topics, 214 (2012) 347-360 Published online: 05 December 2012 DOI: 10.1140/epjst/e2012-01698-7