Programming language != runtime. Erlang-the-language is pretty flaky, but the VM where it runs (plus OTP) is pretty insane. Same for Java, the language itself

Programming language != runtime. Erlang-the-language is pretty flaky, but the VM where it runs (plus OTP) is pretty insane. Same for Java, the language itself is pretty boring, but the runtime (JVM) is great. C# is the opposite, the language is great but the tooling and runtime are not there yet.