IN THE EARLY 1990S, Mexico City played the role more recently occupied by Berlin: peripheral to the art market, yet home to a vital, seemingly organic local art scene and inexpensive rents that drew an international crowd. The market follows the scene, of course, and many of the artists who gathered there soon rose to global visibility, a process that tended to sever them from a Mexican context and history. Such is the contention of Olivier Debroise, Pilar García de Germenos, Cuauhtémoc Medina, and Álvaro Vázquez Mantecón, the curatorial team that organized the extraordinary exhibition “The Age