Kisho Kurokawa’s Nakagin Capsule Tower, located in central Tokyo—is a paradigmatic example of Metabolist theory. It is conceived as a central spine, onto which individual housing pods can be attached and rearranged. In theory, infinite combinations of pods and connections between them allow residents to create larger or smaller spaces in response to different families, budgets, or changes in housing demand over time. Yet the Capsule Tower reveals a deep conceptual flaw: since the building’s completion in 1972, not a single pod has been shifted or combined.