Simulacra and Simulation by Jean Baudrillard explores the concept of hyperreality, where the line between reality and its representations becomes blurred. Baudrillard argues that in the postmodern world, simulations—imitations of reality—have overtaken the real, creating a world where representations no longer reflect any underlying truth but exist as their own reality. These simulations, or "simulacra," shape our perception of the world, replacing authentic experiences with artificial ones. He uses examples from media, consumer culture, and politics to illustrate how modern society is dominated by symbols and signs that no longer point to anything real. The book critiques the loss of meaning in a world where reality has been supplanted by endless reproductions.