Ruby is phenomenally easy to write. This post essentially describes a way to make Ruby less slow, which would reduce the incentive to leave the language.<p>Once they port all Rails libraries to Rust, you can still use the extremely-ergonomic Ruby programming language, but it won&#x27;t be &quot;slow as hell&quot; anymore. And ruby performance is &quot;tolerable in most circumstances&quot; as-is.<p>I certainly agree that it could be awesome to have Rust on Rails for those who would find even Rails on Rust performance intolerable, and Iron&#x27;s abstractions inadequate.