@noelrap I understand why this whole typing thing seems a bit foreign in Ruby. Basically for all the Ruby eternity we were writing unsound code from the typing perspective. Trying to adapt a more strict system to our lax code will fill awkward. Adapting our code to a proper type system is a more productive approach. That said, even a partial typing of our existing code is useful so we can start there. Get used to explicitly type our interfaces at least to some degree and maybe eventually we’ll adopt new ways of writing code that are more suited to stronger typing.