The final edition is updated with some more recent examples, and beyond the standard behavioral economics/psychology research review there's great perspective on the necessity of nudging. Even with including a final chapter addressing some criticisms, it falls into the same behavioral economics trap of failing to interrogate how systems are originally set up under which one engages in nudging. The book itself is up front about its neoliberal bent, but given the glaring failure of that model and the inherent limit on time/focus that regulators and companies have, more grappling with these tradeoffs would've been appropriate. That being said, this is an excellent book, especially if you're unfamiliar with foundational work in this area. Highly recommend