The document discusses how the Lean Startup methodology is changing user experience (UX) design. It argues that Lean Startup's focus on getting customer feedback early in the development process through prototypes and minimum viable products provides opportunities for UX designers to have more impact. However, it also demands that UX work be done faster and with less time spent on upfront design work. The document suggests that UX designers can help Lean Startups by bringing experience with UX methods to help validate ideas with customers quickly and reduce waste.