The invention of written language appears about 3500-3000BC. This is within the early range of the Genesis dating of history; 6000 years. In the beginning was the "written"word; God. This dating also suggests that the story of Genesis was among the first published science theories; new invention. Science evolves. What came before, gave a platform, so future science could see further.
If we look at 1890's science, it would seem primitive, especially medical practices. But we do not throw out all of science, due to the past, since modern science evolved from that base. We learn from the past. Modern astral physics evolved from astrology. If modern science only had the tools of the ancient past, I doubt we would be much further along. The brain is not smarter, the change is really about; applied science making more and better tools for more detailed data. This allows you to extrapolate better with more confidence and then others ge to learn at a higher level than in the past.
It would be an interesting experiment to raise a group of children with only the tools they had 3000 year ago; study the night sky. Science would only allow you to use the data that is solid, and that can be proven by others with just the eyes. This would narrow them down. Before you could go forward, someone would need to invent the telescope, from scratch, so everyone could see what was not seen before and then that is added to the new theory.
What I like about the Genesis is the approach is it based on being rational and not statistical. It assume an omniscience God, who is the smartest person in the universe. One would expect a perfect job, since he see and can plan for every contingency; perfect logic. Genesis is not based on dice and cards, or the story wouls have God hiring is drunk cousin; Murphey, to fall down, bang into things, until something happens. Science seems to have gone astray, with too much based on Lady Luck and Murphy's Law. The modern problem is too many tools and not enough ability to reason all the data. Less data makes it easier to reason; simplicity is the closer to perfection.