Using psychoanalytic theories, Torsten Caeners places the film Prometheus squarely in the canon of YA literature. The characters Elizabeth and the android David are “ciphers for young adult concerns of coming of age.” The crew of the spaceship Prometheus discovers the Engineers, superhuman aliens who created humans. Elizabeth, obsessed with origins, believes they have found the source of humanity, but because of her refusal to let go of her belief paradigms (represented by her father, God, science, and finally the Engineers) she remains in stasis and even moves backward from transitioning in her development. David, though, is the true adolescent, in-between human and nonhuman, moving on and changing, experiencing transformations—the hallmark of posthumanism—serially. Caeners argues that posthumanism is adolescence, as both are liminal conditions, fluid, boundary-less, marked by the angst of transformation and new possibilities.