If you haven't read all of the docs, or you have learnt React just from experience, there's a chance you missed some gotchas, patterns, and features, thus preventing you to build more robust and performant applications. For example, when is it better to use Higher Order Components than Render Props? Why is a functional component slower than a class component? And why are hooks better than Recompose? In this talk we will uncover all of React's deepest secrets and newest features, how to use them, and especially why.