to make sure their value matches that of the indices the funds are tracking. On Simulacra: http://en.wikipedia.org/wiki/Simulacra_and_Simulation Simulacra and Simulation  ( Simulacres et Simulation  in  French ) is a  philosophical   treatise  by  Jean Baudrillard  seeking to interrogate the relationship among reality, symbols, and society. “ The  simulacrum  is never that