Here's why:
* The Neolithic period was characterized by the development of agriculture and settled communities. While these advancements were significant, they didn't immediately lead to the development of writing.
* Written language evolved much later, around 3200 BC in Mesopotamia. This was a gradual process, with early forms of writing being more symbolic than truly phonetic.
* Neolithic societies relied on oral communication and visual symbols. They used things like petroglyphs (rock carvings), pottery designs, and other forms of visual communication to record information and express ideas.
* The development of writing was linked to the need for record-keeping, trade, and the rise of complex societies. These factors weren't fully present in the Neolithic period.
While people in the New Stone Age may have had complex forms of communication, it wasn't in the form of a written language as we understand it today.