By providing a cultural history of the uses of the category in Mexican literary studies, it examines the applicability and limitations of the concept of generation, highliting the importance of contextual and diachronic awareness in its deployment. This study then advocates for an understanding of a generation as a porous sociobiological categorythat groups several people under a similar Weltanschauung. It contends that the heterogeneity of Mexican cultural nationalism generates an equivocal ground for the literature of the generation writers born in the 1960s/1970s,  argues for the consideration of the cluster of Mexican authors born in these decades as a generation.