Today we do not surmise or guess that the three paleolithic periods took place, but we know they happened, with the strength of a large body of self-consistent evidence. During the paleolithic period, human beings moved around as nomads in make-shift villages that had to be quickly constructed and just as quickly abandoned. Agriculture did not exist, rope did not exist, textile clothing with wool , cotton, and silk did not exist. Stone masonry did not exist, and smelted metal tools were not yet invented. Axes, knives, and swords did not exist, and so trees could not be felled quickly, nor could cabins be built by a small entourage. Agriculture was invented not suddenly, but required a slow centuries-long process of domestication of wild variants of grasses, with artificial selection for the most desirable traits (meaty, good-tasting kernels, lack of skin covering on the kernels, high crop yeilds, etc) In sheep and goats, wild variants had to be slowly domesticated, and even more slowly, animal husbandry had to promote those traits of large amounts of wool for clothing and for fattened flesh for consumption.
It is the topic of agriculture and domestication of wild animals and plants that is the single most damaging attack on Genesis. It is the problem of this sudden, unexplained emergence of bronze-aged technology that shows in the most clear light -- that the book of Genesis is a creation myth. This creation myth is not related to the true objective history of homo sapiens. Tens of thousands of years of human history took place, where humans were hunter-gatherers on many continents prior to the invention of these technologies. We don't surmise this happened. We know this happened.
In a final assessment, the idea that four humans beings (Adam, Eve, Cain, Abel) could settle down into a agricultural village is not even logistically feasible. If for no other reason, metal axes and stone masonry did not exist. You cannot construct the basic amenities of agricultural life without these tools. There is probably some lower bound on the number of people would could construct an agricultural village starting from absolutely nothing at all out in the wild, -- but this number is far greater than four. A more reasonable estimate may be as high as 300 people near a river.
Sudden technological references in the fourth chapter of Genesis demonstrate that this book is a creation myth, and not connected to real history. Let's cover the examples.
The end of the third chapter in Genesis mentions bread. And apparently this statement was made by Jehovah himself to Adam, prior to him having any time out in the wild after expulsion from the garden. Some evidence shows that bread was first eaten by people of the Upper Paleolithic period, who had to first roast kernels in order for them to be ground. The first human beings probably did not know what bread was.
In the sweat of thy face shalt thou eat bread, till thou return unto the ground; for out of it wast thou taken: for dust thou art, and unto dust shalt thou return.
- Genesis ch.3 v.19
Genesis chapter 4 mentions domesticated sheep and the agricultural practice of tilling. Tilling is an anachronism. Human beings moved in nomadic bands for tens of thousands of years prior to utilizing farming plots to maximize yield in a small area. Additionally, there is no reason that four humans would need the amount of food afforded by tilling plots. They would throw out most of it.And she again bare his brother Abel. And Abel was a keeper of sheep, but Cain was a tiller of the ground.
- Genesis ch.4 v.2
The 22nd verse mentions iron and brass. We can excuse the fact that brass was mentioned because the Hebrew word could also refer to bronze. Both cases are damning anachronisms, but the mentioning of iron smelting moreso. Iron smelting was invented by the Hittites several millennia after the invention of bronze smelting. This is in recorded history! The Hittites were an entire civilization that existed subsequently several Egyptian dynasties. That is to say, iron smelting was invented after the invention of writing. We can surmise from the order of the verses in chapter 4 that Adam was still alive after the invention of iron smelting. That is completely ridiculous. Without a shadow of a doubt, we know that metal smelting technology was invented far later than early stone tech.And Zillah, she also bare Tubalcain, an instructer of every artificer in brass and iron: and the sister of Tubalcain, was Naamah.
- Genesis ch.4 v.22
With such bizarre technology mentioned at the time of the first four humans, we might hypothesize here that the book of Genesis was actually intended to refer to Jehovah creating the people who later became the Hebrew tribes. Cain is said to marry a wife while in the land of Nod. Where did his wife come from? This is more evidence that it was only later that the book of Genesis was interpreted to refer to the beginnings of all human beings on earth, rather than refer to the creation of Hebrew tribesman. At the time it was written, Genesis was probably intended as a creation myth only for a single tribe, not as a description of the origin of homo sapiens.
These observations only strengthen and reinforce the intended main thesis: the book of Genesis must be a creation myth.