For a species driven entirely by instinct, yes. But given a species that is able to reason, wouldn’t a “raiser” who is given a whole group to raise be more efficient than parents? The benefit of a small minority of tribe members passing down their culture would certainly outweigh those few members also having children.
For a species driven entirely by instinct, yes. But given a species that is able to reason, wouldn’t a “raiser” who is given a whole group to raise be more efficient than parents? The benefit of a small minority of tribe members passing down their culture would certainly outweigh those few members also having children.