Developers adopted Agile methodologies for building websites and applications, which was wonderful because it meant they could get started, have a go, and not have to wait for specifications documents to be created. But it was terrible if their bosses wanted wonderful graphic and interface design to be a part of the process because competing expectations and workflows started to clash.
That's where Lean UX comes in, and that's where Josh starts telling Ross about why he's so excited about the concept. They chat about the pros and cons and who's right and wrong. You get a ringside seat.
Josh really did create uxluv.tumblr.com.