I don't believe in gender identity.. or homosexual genes. Or sexual orientation. 
@kat that's broad, but it sounds scientific if you say it's a spectrum, which it probably is...
@jansegers as a trans person not believing in gender identity  is problematic
@kat @jansegers I know a lot of ppl not believing in gender identit. We call it #postgender
@marcus @kat I was looking for that term thanks !
@jansegers @kat Ivan E. Coyote and Rae Spoon wrote a great book on that topic called 'Gender Failure' or 'Goodbye Gender' in the German translation: http://www.raespoon.com/books