The Xenogenesis trilogy asks a lot from its reader, in the sense of difficult themes, ambiguity of certain topics. It all comes from the writing from Octavia Butler, by how she sets up and provides many serious topics which are not easy to answer, or sometimes, even to read. The future holds much mystery, and, according to Butler, humans are going to fall, because of their own stupidity, greed for power and hierarchal order. The sense of being human is the core point and Butler offers a narrative towards which path could medicine go, that is, in the trilogy, the Oankali capabilities in changing the human and how that would affect the future of humanity. With the rapid advances in technology and medicine, Butler`s narrative of the Oankali as an allegorical representation of human advances in technology, but also a representation of humans as a dominant species, should be seen as really plausible. How far is it possible to go until you are no longer a human being? The repercussions that come with certain decisions, and the backlash from the dissenters, it all has influence on the individual who goes in the way of change. Her writing moves humans away from the centre and introduces a symbiotic life which is not completely reciprocal.