Gretchen talks a lot about patriarchy and how men hurt women. And with research project names like the "Twilight of Adam" and the "Dawn of Eve," she's potentially planning to see if the island "reset" could change how the two groups act in general, or even around each other. Additionally, in a literal sense, dawn happens before twilight, which happens before sunrise. What exactly will Gretchen's "sunrise" entail?
Sarah Pidgeon, who plays Leah, mentioned in an interview she also wonders about this theory. "The question is, what are [Gretchen and her staff] after? What are they interested in learning?" she said. "Is it that matriarchal societies run more efficiently and less violently, more egalitarian than a patriarchal society? If so, then I think we'd have to see how the boys' island contrasts to the girls' experiences."