“The biology of sexual identity is revealing important data that points to diversity in sexual orientation, leading us to accept that looking at gender in a binary fashion is unacceptable; gender identity in Homo sapiens is probably much more ambiguous and diverse then we once thought. (Rosario, 276-279) From this we can conclude that the gender identity listing in the current Diagnostic and Statistical Manual of Mental Disorders should be eliminated. Genetic engineering of the brain will only increase the ambiguity if we choose. A post-binary-gender society is possible, not only in the future, but it may already be here naturally.” - × × ×
Traditional values of looking at gender in binary fashion grow less and less important as scientists show that gender identity is diverse in nature and is caused by many biological and social conditions. If one were to look at the pure science of gender identity, it not only appears that a postgender society is possible but it seems we are already living in one. - Michael Bravo
"The Gethenians do not see one another as men or women. This is almost impossible for our imaginations to accept. After all, what is the first question we ask about a newborn baby? ....there is no division of humanity into strong and weak halves, protected/ protective. One is respected and judged only as a human being. You cannot cast a Gethenian in the role of Man or Woman, while adopting towards 'him' a corresponding role dependant on your expetations of the interactions between persons of the same or oppositve sex. It is an appalling experience for a Terran "
— Ursula K. Le Guin (The Left Hand of Darkness) - Michael Bravo