Book excerpt: The Handbook of Interior Architecture and Design offers a compelling collection of original essays that seek to examine the shifting role of interior architecture and interior design, and their importance and meaning within the contemporary world. Interior architecture and interior design are disciplines that span a complexity of ideas, ranging from human behaviour and anthropology to history and the technology of the future. Approaches to designing the interior are in a constant state of flux, reflecting and adapting to the changing systems of history, culture and politics. It is this process that allows interior design to be used as evidence for identifying patterns of consumption, gender, identity and social issues. The Handbook of Interior Architecture and Design provides a pioneering overview of the ideas and arrangements within the two disciplines that make them such important platforms from which to study the way humans interact with the space around them. Covering a wide range of thought and research, the book enables the reader to investigate fully the changing face of interior architecture and interior design, while offering questions about their future trajectory.