"Not only is human evolution linear in the Farscape universe, but it also follows a pre-set trajectory towards increasing complexity. The next step after original Crichton is “advanced” Crichton, distinguished by the folded indentations in his forehead, evidence of a huge brain that is literally too big for his skull. A separate paper could be written about how extraordinarily disadvantageous such a variation would be, but what is equally interesting is the premise of the episode that states that “advanced” Crichton was “evolved” from original Crichton’s DNA. The implicit argument here is that humanity’s evolutionary trajectory is preset. Human beings will evolve in a particular way, regardless of anything else around them."