They communicated orally and did pictures. There are intricate cave paintings which are 40,800 years old found in Spain. Just because man did not learn to write until fairly recently does not mean they were not man. We did not learn how to fly until the early part of the last century..does not mean we are not human because we were not flaying 5000 years ago. does it?
There was a house foundation found in England that is 11,500 years old.
No valid scientifically tested artifact has been validated to show “modern man” existed before 6000 years. The evidence is not only anemic, it’s non-existent. Maybe something else like dinosaurs or monkey-type creatures. But not “modern man.”