In the video "Turbolinks 5: I Can't Believe It's Not Native!" presented by Sam Stephenson at RailsConf 2016, the focus is on how Turbolinks 5 can significantly enhance the efficiency of web application development using Rails. • The speaker begins with a brief introduction about his background, including his contributions to open source projects and his work with Basecamp. • He shares his experience of leading the development of Basecamp 3, which was built in just 18 months on multiple platforms with a small team. • Turbolinks 5 served as a crucial tool in achieving this rapid development across five platforms—web and native applications for both Android and iOS. • Stephenson addresses common misconceptions about Turbolinks, often seen as a feature that needs to be turned off in new projects due to its perceived complexities and issues with jQuery. • The presentation discusses the evolution of web development since the introduction of Rails, contrasting it with more cumbersome options available before its advent, such as J2EE and PHP. • By explaining the benefits of Turbolinks 5, he aims to illustrate larger philosophies about streamlined web development. • Stephenson concludes that Turbolinks 5 is not just a tool but promotes a mindset that can lead to more efficient and effective web applications, encouraging developers to embrace it fully for better project outcomes.