Abstract
The introduction proposes that each chapter in this volume addresses the simultaneity of cisness as a bifurcating and hierarchizing ideology that is fundamental to racial, colonial, and class formation. It offers a theory of sexual difference without cisness to systematize the theoretical contribution of the essays collected in this volume. It derives this theory from engagement with examples from trans historical archives, materialist feminist theories, memoirs that document gendered experiences, and the essays that compose the collection that follows.