>> Interestingly, among these depictions there are some which indeed appear to be symbolic substitutes for more complex images, like the bucranium (ox head) in place of a full aurochs, or arrow-like zigzag lines representing snakes, and large birds reduced to a few characteristic lines. These depictions and their “abbreviations” seem to adhere to a certain convention, kind of a standardisation even, suggesting a communication system that uses these stone objects as media to store important information and knowledge.
>But totally not writing, yo.
Children drawings have the same characteristics but are not writings