Building on the success of the first edition, an engaging and reader-friendly work on complex ideas, Introducing Architectural Theory: Expanding the Disciplinary Debate, broadens the range of themes, voices, and geographies represented to provide a more comprehensive and contemporary theory book. This book presents major discourses in architectural theory and design in a debate-like format, integrating a series of edited texts across architectural history with context and newly written commentaries by the authors. This new edition has been fully revised, updated, and expanded to include long-standing debates, such as simplicity vs. complexity or the relationship between form and function, as well as newer discussions on innovation, globalization, and social equity. Authors Smith and Guitart provide a comprehensive means and conceptual framework for readers to compare multiple points of view. The chapter structure, discussion questions, and additional resources allow teachers to facilitate in-class discussions and writing assignments. This book remains the most accessible architectural theory textbook, written for beginning architecture students and those outside the discipline. Its reflective and critical approach will equally engage the minds of upper-level students and experts.