[Adder]

Precisely: the “interbreeding” could very well have been the result of rapine and pillaging.

It worked for the Romans.....

[Nikas777]

I hate when scientists insert ideologies (in this case the theory humans were like peace loving flower power hippies in the olden days) in their theories.

More than likely one set of humans killed the men folk - ATE THEM - and raped the females (all ages) and kept the ones that got pregnant and killed AND ATE the rest.