The article introduces jj, a command-line interface for Jujutsu, a distributed version control system that aims to be simpler and more powerful than git. Jujutsu has a git-compatible backend, allowing users to work with git repositories without requiring others to convert. The article provides a tutorial on using jj, covering topics such as installation, basic commands, and workflows. The author claims that jj can be used seamlessly with git, allowing users to try it out without disrupting their existing workflow.