This conversation is part of a special issue on ''Critical Nutrition'' in which multiple authors weigh in on various themes related to the origins, character, and consequences of contemporary American nutrition discourses and practices, as well as how nutrition might be known and done differently. In this section one author calls into question the validity and efficacy of the 1977 Dietary Goals for the United States that are still widely used in official nutrition information.A second author considers whether official dietary recommendations are commonly known, let alone followed, and therefore questions their effectiveness at shaping actual dietary practice.