The document summarizes the history and current state of the Silverstripe CMS user interface stack. It describes how the stack originally used a mismatch of legacy technologies like jQuery, Entwine, and templates. It then overhauled to use modern technologies like Webpack, React, Redux, and GraphQL. However, the legacy stack is still in use alongside the modern one, resulting in a hybrid "weird" stack. The document advocates embracing this weirdness and focuses on incremental improvements within these constraints.