Long before the earliest writings of the Sumerians and the Egyptians were developed, people communicated with each other by a number of different methods. Early humans could express thoughts and feelings by means of speech or by signs or gestures. They could signal with fire and smoke, drums, or whistles.Have to imagine they were operating in fight or flight mode similarly to other creatures in their various environments, motivated by instinctWhatever abilities and skills they learned and perfected would have been subject to the habitat of predators and those not primarily based on their survival , un nurtured ,But at some point for whatever reason of which there are’ many theories humans began to organise and adapt beyond pure instinct .. and it’s believed language played an integral part in this evolution …