The article discusses how current design methods focus on single users and don't consider the impact of multiple users on technology use. The researchers suggest integrating a multi-user approach into design methods to better reflect real-world usage. They propose guidelines for creating a Multi-User eXperience (MUX) and a Multi-user Acceptance Model (MAM). User research and testing should also include multiple users. This new Multi-user Centered Design (MCD) approach aims to improve product design for social and collaborative values.