Lean Enterprise: How High Performance Organizations Innovate at Scale (Lean (O'Reilly))

by Jez Humble

We should stop using the word “requirements” in product development, at least in the context of nontrivial features. What we have, rather, are hypotheses. We believe that a particular business model, or product, or feature, will prove valuable to customers. But we must test our assumptions. We can take a scientific approach to testing these assumptions by running experiments.