Ah, well, those are interesting puzzles in their own right, aren't they?  Why are women Lawfuller?  Why are men more likely than women to become adventurers?  Keltham knows the answers already, even though he's a stranger to the planet, because it was the same way in dath ilan.  He's not going to tell them the answer, just yet; they're welcome to try to see it on their own, if they can; and maybe they even will, before he gets around to giving away the answers.  If so, he will be duly impressed.

But let us return back to the original question.  Suppose, again, you are designing humans from scratch.  Why not twice as many women as men, and also have the women be as likely as current men to become adventurers?  Wouldn't a group like that be able to increase faster, because more people could bear children?

Ah, well, those are interesting puzzles in their own right, aren't they?  Why are women Lawfuller?  Why are men more likely than women to become adventurers?  Keltham knows the answers already, even though he's a stranger to the planet, because it was the same way in dath ilan.  He's not going to tell them the answer, just yet; they're welcome to try to see it on their own, if they can; and maybe they even will, before he gets around to giving away the answers.  If so, he will be duly impressed.

But return back to the original question.  Suppose, again, you are designing humans from scratch.  Why not twice as many women as men, and also have the women be as likely as current men to become adventurers?  Wouldn't a group like that be able to increase faster, because more people could bear children?