By being selective with one's choices, you can make any calculation seem coherent. Yours isn't.What is my story? Your link says people made it to Australia 46kya, thats quite a bit later than the 60-65 kya I've seen in the research. If we started out as slaves, some undoubtedly escaped but they died out or got absorbed by earlier Eurasian peoples - the migration responsible for us seems to have occurred sometime after 70 kya...
Now here's the interesting thing about the Bible and Sumerian myth, there's a passage in Genesis claiming God's 'spirit' would reside in man only 120 years and the Flood would end us (flesh and blood).
But the Sumerians attributed to their gods a 'divine year', "God's year" was 3,600 years. We can see this belief embodied in various kings lists, pre-flood monarchs (gods) lived and reigned for very long periods of time, even 'mythical'.
Multiplying 120 x 3600 gives us 432,000 years... That number shows up in the architecture of Angkor Wat and mythology of the Vikings (thru 540 doors will go 800 warriors to face the wolf at the end time). But that was 432,000 years before the flood, or about 445,000 years bp. According to the Sumerian myth the gods labored 40 years before rebelling and that led to our creation as labor. Multiply 40 by 3600 and we get 144,000 years. Subtract that from 445,000 and we get ~300,000 years ago for this rebellion of the gods (sounds a bit like Lucifer's disobedience).
So starting around 300,000 years ago the Sumerian gods began the process of making us. Their first goal was labor but eventually the gods making us took pride in their creation and produced smarter critters. Another god didn't like that, he didn't want us roaming around disrupting his domain. Hence we have a god in Genesis intent on wiping us out while saving us - two different gods were the main actors and the monotheists combined them into one somewhat schizophrenic deity.
The Genesis 6:3 mention of human life span being now limited to 120 years happens just before the flood. If biblical men lived 120 years and Sumerian gods lived 3600 years, what does multiplying them together actually achieve? The Sumerian gods lived 830 times as long as men (3600/120). OK I get that. If a generation is 20 years, then I can see that humans live no more than 5 generations and gods about 180 generations (3600/20). But multiplying the longest possible human life (which never happens) by the life of the gods in years, is crap math that means nothing. You like it because you want the answer to fit.
If Adam lived 70,000 years ago and you count years to the flood by looking at the lives of the biblical patriarchs down to the flood, you get 1656 years. So are you saying that the flood happened 68,344 years ago?
Which Sumerian myth tells the tale of mankind's creation and rebellion of the gods after 40 years of labor? The Marduk one?
Spoiler :
Genesis 6:3 said:5 This is the book of Adam’s history. In the day that God created Adam, he made him in the likeness of God.+ 2 Male and female he created them.+ On the day they were created,+ he blessed them and named them Man.*3 Adam lived for 130 years and then became father to a son in his likeness, in his image, and he named him Seth.+ 4 After becoming father to Seth, Adam lived for 800 years. And he became father to sons and daughters. 5 So all the days of Adam’s life amounted to 930 years, and then he died.+6 Seth lived for 105 years and then became father to Eʹnosh.+ 7 After becoming father to Eʹnosh, Seth lived for 807 years. And he became father to sons and daughters. 8 So all the days of Seth amounted to 912 years, and then he died.9 Eʹnosh lived for 90 years and then became father to Keʹnan.10 After becoming father to Keʹnan, Eʹnosh lived for 815 years. And he became father to sons and daughters. 11 So all the days of Eʹnosh amounted to 905 years, and then he died.12 Keʹnan lived for 70 years and then became father to Ma·halʹa·lel.+ 13 After becoming father to Ma·halʹa·lel, Keʹnan lived for 840 years. And he became father to sons and daughters.14 So all the days of Keʹnan amounted to 910 years, and then he died.15 Ma·halʹa·lel lived for 65 years and then became father to Jaʹred.+ 16 After becoming father to Jaʹred, Ma·halʹa·lel lived for 830 years. And he became father to sons and daughters. 17 So all the days of Ma·halʹa·lel amounted to 895 years, and then he died.18 Jaʹred lived for 162 years and then became father to Eʹnoch.+ 19 After becoming father to Eʹnoch, Jaʹred lived for 800 years. And he became father to sons and daughters. 20 So all the days of Jaʹred amounted to 962 years, and then he died.21 Eʹnoch lived for 65 years and then became father to Me·thuʹse·lah.+ 22 After becoming father to Me·thuʹse·lah, Eʹnoch continued to walk with the true God* for 300 years. And he became father to sons and daughters. 23 So all the days of Eʹnoch amounted to 365 years. 24 Eʹnoch kept walking with the true God.+ Then he was no more, for God took him.+25 Me·thuʹse·lah lived for 187 years and then became father to Laʹmech.+ 26 After becoming father to Laʹmech, Me·thuʹse·lah lived for 782 years. And he became father to sons and daughters.27 So all the days of Me·thuʹse·lah amounted to 969 years, and then he died.28 Laʹmech lived for 182 years and then became father to a son. 29 He named him Noah,*+ saying: “This one will bring us comfort* from our labor and from the painful toil of our hands because of the ground that Jehovah has cursed.”+ 30 After becoming father to Noah, Laʹmech lived for 595 years. And he became father to sons and daughters. 31 So all the days of Laʹmech amounted to 777 years, and then he died.32 After Noah reached 500 years of age, he became father to Shem,+ Ham,+ and Jaʹpheth.+