This is the path being trailed by the languages more expressive than Go. That path was the default prior to Go. Go's built-in concurrency, with the predecessor

This is the path being trailed by the languages more expressive than Go. That path was the default prior to Go. Go's built-in concurrency, with the predecessor work by Rob Pike and others, was "the breath of fresh air" when it popularized its particular approach to concurrency several years ago. If the language is powerful enough in the expressiveness ...it can create problems when programming "in the large." The challenge with programming languages has never been "expressiveness" in isolation. Few languages are more expressive than Lisp, and that's been around for a very long time. The problems have always had to do with various tradeoffs with performance and programmer effort in different contexts.