NNgroup: 'the funnel technique in user interviews'
https://www.youtube.com/embed/2wF9tWSugm4
Bibliography: Rosala, M., & Moran, K. (2022, July 24). 'The Funnel Technique in Qualitative User Research'. Nielsen Norman Group. https://www.nngroup.com/articles/the-funnel-technique-in-qualitative-user-research/
