It's a common misunderstanding between evolution and natural selection that everything has to take tens of thousands of year to change.
It takes that long to evolve new heritable traits.
But natural selection can take an already existing phenotype from 1% prevalence to 90+% prevalent, or vice versa, in just a few generations. If the selection pressures are strong enough.
The difference between a problem solvable in 60 years or one solvable in >10,000 is if good enough women currently exist.
It's a common misunderstanding between evolution and natural selection that everything has to take tens of thousands of year to change.
It takes that long to evolve new heritable traits.
But natural selection can take an already existing phenotype from 1% prevalence to 90+% prevalent, or vice versa, in just a few generations. If the selection pressures are strong enough.
The difference between a problem solvable in 60 years or one solvable in >10,000 is if good enough women currently exist.