Why is BIM better than CAD?

Why is it that Building Information Modeling (BIM) is often touted as being superior to Computer-Aided Design (CAD) in the construction industry? Could you explain the key advantages BIM offers over CAD in terms of collaboration, efficiency, and accuracy? How does BIM's ability to integrate various aspects of a project, such as structural, electrical, and plumbing designs, contribute to its reputation as a more advanced tool? Additionally, what are some real-world examples where BIM has proven to be more effective than CAD in managing complex construction projects?