Particularly in humans, a division of labor is necessary because the female is burdened with a child not for just a couple of days or weeks but for years. [Emphasis added - CRC]Uh... But it is "the female" that is burdened with child-rearing for years precisely because that labour is not equitably divided between both parents!
Cute language-murder trick there -- calling that lack of a division of labour a "division of labor", using the fact that women are unfairly burdened as a justification that it is somehow "fair" that women are more burdened than men.
Not something I would have expected from you, though, Andrew.