https://research.swtch.com/coro https://research.swtch.com/coro at the very end explains that channels are too slow. Re mutexes: one of Rob Pike‘s Go Proverbs

https://research.swtch.com/coro https://research.swtch.com/coro at the very end explains that channels are too slow. Re mutexes: one of Rob Pike‘s Go Proverbs (https://go-proverbs.github.io/ https://go-proverbs.github.io/) was "channels orchestrate, mutexes serialize“. Both have their places.