According to Out of Africa as "Pygmies" and back as global "Mongoloids" a new genetic feature we may call a "small but super-wrinkled brain", sometime established itself in a "pygmy" hominid or homo population somewhere in Africa (East Congo/Tanzania?). These "pygmies" may have been "Homo Floresiensis". Some 80-60.000 ya some of them had hybridized with close relatives in Africa, hence paving the way for the M130 out-of-Afrca lineage (Negritos etc). A recent study, very thoughtprovoking in itself, may be even more so if adopted to this hypothesis.
"the first genetic evidence that statistically rejects the null
hypothesis that our species descends from a single, historically panmictic population. In a
global sample of 42 X chromosomes, two African individuals carry a lineage of non-coding
17.5 kilobase sequence that has survived for over one million years without any clear traces
of ongoing recombination with other lineages at this locus. These patterns of deep haplotype
divergence and long-range linkage disequilibrium are best explained by a prolonged
period of ancestral population subdivision followed by relatively recent interbreeding. This
inference supports human evolution models that incorporate admixture between divergent
African branches of the genus Homo."
Klevius' comment: If my hypothesis is even remotely true this combined out-of-Africa/out-of-Asia scenario would be almost too good to be true. Everyone satisfied (except those with a "Mongoloid-complex") and the Mbutis at the center stage!