Use cases are a highly-regarded technique for documenting requirements that has the added side-benefit of translating into tests. The concrete step-by-step use case format aids communication and helps avoid certain types of misunderstandings. However, widespread misinformation about use cases can significantly diminish their value. In fact, the impact is doubled because analysts and testers not only miss a lot but also are not aware of the gaps from relying on illusory expectations for use cases. In this interactive presentation, requirements and testing expert Robin Goldsmith reveals seldom-recognized use case limitations and when/how to gain advantage from using them.