The goal of user interface design is to produce a user interface which makes it easy, efficient, and enjoyable (user-friendly) to operate a machine in the way which produces the desired result (i.e.

Neovim is a refactor, and sometimes redactor, in the tradition of Vim. It is not a rewrite but a continuation and extension of Vim. Neovim is built for users who want the good parts of Vim, and more.