correct me if wrong - but I get the impression that you only go back 4,000 years for the 'qualia' that you think entered humans at that point?
as far as I know complex human settlements surely go back further than that?
About 4.000 BC somewhere in Mesopotamia.
My view about the origin of consciousness is based on Catholic tradition and the Bicameralism theory from Julian Jaynes.
The modern human behavior starts about 50.000 to 40.000. This is the mark of the development of high level (mortal) sensitive soul in humans.
Technological innovation is a key to compare unconscious species. Some species of Homo have no technology innovation for ages and became extinct because this inability.
Human settlements goes back to 20.000 BC. Ohalo is the oldest settlement ever found AFAIK.
Jaynes argues that language and civilization are prerequisites to consciousness. There's no shortcuts to his theory and I suggest to read his books for a better understanding of how unconscious men were able to develop language and primitive civilizations.
His theory is centered in the origin of consciousness as being a natural phenomenon, but he tries to keep an open mind view and mention several possibilities including the metaphysical one (my view).
He says the Book of Amos in OT was written by a bicameral (unconscious) man. And points out the difference between Amos and Ecclesiastes for instance.