The document discusses the evolution of reference services in libraries. It describes traditional reference models involving in-person librarian assistance and reference interviews. It then discusses moving to more proactive reference services with roaming librarians who provide virtual and embedded support. The document debates whether libraries should maintain a physical reference desk or move to a "Research Assistance as a Service" model with librarians offering remote assistance using new technologies and being embedded within user communities and projects. It concludes by posing debate questions on the best model for reference services at NTU Libraries.