This show did a remarkable job of portraying pregnancy loss and infertility. There is clearly personal experience in the writer's room.
Two things jumped out at me.
First, the doctor talking about what Gemma is "siring". That is an odd description for a woman, and even more so an infertile person. Men sire, women birth. And she doesn't seem to be pregnant in there. Perhaps the "siring" is providing her eggs, for others to birth - like the women in the innie birthing center. I sure hope that they're not being inseminated by Mark... as collected by Helena the one time... and maybe the second time. I'm not 100% sure we're back to Helly.
Second, Selvig being a Lumon soldier and her position in the "outie" world being lactation consultant. Her advice was sound. So maybe she provides that service to the women giving birth to what Gemma has "sired" - and maybe those women aren't breastfeeding, or there are children not being born from women, which means they would need replacement milk, and the best options are either formula or....
goat's milk. Truly. The best natural alternative to human milk, for human babies, is goat milk. It's nurturing.
Mammalians nurturable.
Maybe the nurturable mammals are not the goats, but the babies born from Gemma's eggs (and maybe others). The goats are raised for their milk to nurture the human babies.
We heard "they're not ready yet". Not the goats - the babies.
