Jean Baudrillard was a French social theorist best known for analyzing mediation and technology's influence on communication. In his seminal work "Simulacra and Simulation," Baudrillard examines how representations have evolved from distinguishing reality in pre-modern times to preceding it in postmodernity. He argues that society has replaced reality with symbols and signs such that human experience is of a simulation rather than reality itself. For example, some 9/11 victims described the trauma as like a film, showing how simulations can become more real than actual events.