In this Scrum Tapas video, PST Oscar Styf discusses the importance of questioning and seeking evidence in the context of trusting individuals in your Agile journey. He emphasizes the need to understand why someone holds a certain role or title, such as a Product Owner, Scrum Master, Agile Coach, or Professional Scrum Trainer. Oscar explains that Professional Scrum Trainers are not only experts in Scrum but also have extensive practical experience in various frameworks and methodologies. They have learned from their own mistakes and successes, making them valuable resources for teams and organizations looking to adopt Scrum and Agile practices. Oscar suggests that working with a Professional Scrum Trainer can provide valuable insights and guidance, helping teams avoid common pitfalls and navigate the complexities of Agile transformations more effectively.