I'm just having a hard time grasping the idea that our complex written language of today derived from grunts or no sounds at all.
There are alot of enormous gulfs that stand in between even the most intelligent creatures and humans. Language is certainly one of them. The unity of language provides a basis for how all languages are derived from one. This corrolary is evident by the similarity of roots words and grammatical structure. The similarity of the Indo-European family of languages, as well as Semitic, Hamitic and Sino-Asiatic all seem to have some root language at the base. Certain philologists seem to think that it was likely Sumerian and that other ancient languages including Hebrew, Akkadian, Egpytian and Sanskrit were offshoots of the original Sumerian language.
Do I think that mans' language, both written and spoken, derived from a series of grunts, bellows, clicks and whistles? No, certainly not. The belief that it remains so is speculatitve, but it isn't based on empiricism; especially in lieu of language actually diminishing in sophistication. All that we know from the earliest manuscripts is that life seemed to explode already extant and complex in lower Mesopotamia some 5,000 years ago. History reveals this fact very well.
“Always be ready to give a defense to
everyone who asks you a reason for the
hope that is in you.” -1st Peter 3:15