0011 So, what am I getting at?
0012 The navel idols before the rise in sea-levels are made in order to stimulate an embodied interventional sign-relation, not unlike the Lion Man statue found in southern Germany, dating to 35,000 years ago.
0013 Say what?
They are designed to induce – what Julian Jaynes calls – “auditory hallucinations” in a hand-speech talking Paleolithic human.
The topic is discussed in Razie Mah’s e-book, Synaesthesia and the Bicameral Mind in Human Evolution (available at smashwords and other e-book venues).
0014 Okay, what about the navel idols after the rise in sea levels?
6800 B.C. corresponds the most rapid increase in sea-levels at the end of the last interglacial. Among other things, the Persian Gulf fills with seawater. The rise forces a Mesolithic river and coast hugging culture into proximity with a dryland Neolithic culture (perhaps related to the traditions of Gobekli Tepe).
At the start, both cultures practice their own traditional hand-speech talk, just like all the human Epipaleolithic and Neolithic cultures at the time. When forced into the same territory, they first develop a pidgin, then a creole. The creole does not have the hand-component of hand-speech talk. The emerging union, the pre-Ubaid, practices speech-alone talk. At 6800 B.C., it is the only culture on Earth to do so.
0015 Creole?
The Sumerian language is unrelated to any family of languages.
0016 Razie Mah tells the story in a course called “The Crystallization of the Fall”, which includes the short work, The First Singularity and its Fairy-Tale Trace. The spread of speech-alone talk is alluded to in chapter five of An Archaeology of the Fall.
Here is a figure for the hypothesis of the first singularity.

0017 At the time of Gobekli Tepe, all cultures practice hand-speech talk.
Today, all civilizations practice speech-alone talk.
0018 Surely, this comes as a revelation to the author, who has laboriously and studiously sought out data for which he has little hope of accounting for. The book itself is a plea for precisely such an accounting. I only pray that this examination offers a guess that may be closer to truth than… well… make-believe.