Comment by Cu3PO42

I really like the message passing paradigm. And languages like Erlang have shown that its an excellent choice... for distributed systems. But writing code like that is a very diffferent experience from, say, async JavaScript, which feels more like writing synchronous code with green threads (except you have to deal with function coloring as well). I believe people will try to write code in a way that is already familiar to them, leading them down the path of Arc and RwLock in Rust.