The document discusses the social aspect of BIM, which accounts for 90% of its value according to some experts. It notes that while CAD systems improved collaboration to some extent through features like external references, they still had limitations. BIM addresses this through integrated tools that link and share models and data in real-time, allowing different stakeholders to interact virtually and contribute to a project simultaneously. When team members utilize these collaboration features effectively, it can significantly improve coordination, productivity and the project outcome.