This study delves into the ways in which the thinning population of Neanderthals contributed to the modern human race.
To address the possibility that the two groups would not have seen one another as potential mates, the researchers also examined the possible impacts of social barriers to mating in their models. They found that unless social taboos were nearly 100 percent effective, it would have not made any difference in outcomes over time as the gene pools mixed, Barton said.
"This is one of the first attempts to explicitly address the impact of various degrees of social avoidance on possible hybridization between the two groups," added Riel-Salvatore.
"Other than the fact that they disappeared, there is no evidence that Neanderthals were any less fit as hunter-gatherers of the late Pleistocene than any other human ancestor living at that time. It looks like they were as capable as anyone else," Barton said.
We might never know the details regarding this merger of the races. It doesn't help that there was no written language at the time. But I do like the idea that the social taboos were overturned here.