... I prefer to take another approach. Incorporate data into each and every story. Think for a moment about the “T” in the popular INVEST acronym (a way to remember and assess what makes a good User Story). User stories are supposed to be Testable. We go to great ends to write unit, functional, and integration tests. But how about testing our basic hypotheses? Or that the story is meeting user expectations and driving the expected value? .... Accompanying Article: https://medium.com/@johnpcutler/user-stories-and-data-32057117fc7b#.w2yhspv12