Kim is the VP of User Experience at PatientsLikeMe. She’s also an author and expert on personas and scenarios. She believes that where you are in the design process defines whether scenarios are a deliverable or an artifact. The size and culture of your team is also a factor. A smaller team has less of a need for formal deliverables.
However, in larger organizations scenarios and personas serve as a great way to get everyone involved in the same frame of mind. Bringing stakeholders to interviews with users at the start of the design research helps solidify that the personas used to inform the design are shorthand versions of real people. This gives you a solid foundation to move forward with the design.