One of the issues that women and female chimps for that matter struggle with terribly is the lengthy period of dependency that highly intelligent primate infants are characterized by. And so female chimp will carry her infant 500 miles in the first three years. She has to carry the infant, they can claim too, but she has to carry the infant everywhere. It's an unbelievable burden. It's an unbelievable burden. And so and it's partly because it's we're worse even in human in humans because human infants are born even less able than chimpanzee infants. And there's a reason for that. It's like a needle. Yeah. Well, they're like a fetus. They're actually they're actually fetal in in in a very real sense. So the human cortex is so large that there's an arms race between the size of the infants had and the the width of the pelvic opening through which birth must take place.