When statically typed language C# added a dynamic keyword, that's a language going the other way. Of course, no-one actually thinks of C# as being a dynamicall

When statically typed language C# added a dynamic keyword, that's a language going the other way. Of course, no-one actually thinks of C# as being a dynamically typed language despite its dynamic keyword, nor does anyone think of Apache Groovy as being a statically typed language despite its @CompileStatic annotation. In the everyday world, C# is used for building performant systems and Groovy is used for glue code and build scripts. Languages tend to go both ways nowadays. Go first shipped with both static typing (though without generics except for builtin datatypes) and dynamic typing (though using the wordy interface{} marker).