Whether architecture includes all built structures. Among the issues noted here, that of the greatest consequence is the question of what counts among architectural objects. On an inclusivist or expansive conception, architectural objects are those designed objects ranging over the whole of the built environment; on an exclusivist conception, the range describes only some coherent subset of the whole of the built environment. Examples of exclusivist subsets include (a) only built structures that people can occupy (typically: houses, temples, office buildings, factories, etc.), or (b) only built structures designed in primarily aesthetic (rather than purely functional) terms. An inclusivist conception entails a vastly larger architectural domain of objects—and areas of practice and inquiry.