The Evolution of the Evolution of Language in the Human Line

I don't think anybody really has an answer that they could state with confidence and not boast. I have cats and they seem to reason to find solutions to problems even in like a setting where they have zero experience. So my guess is that there are many mammals have a lot of the same machinery, but we've developed it a lot more. We don't know where exactly has given us some extra reasoning power. This is something that most animals share.