Dave Low wrote in message ...
> Not to push the point, I'd say there _is_ a gradient between "female" and
> "male". As always, the exceptional cases demonstrate the fluid boundaries of the
> majority. Take homosexuals, transexuals and hermaphrodites. Or heterosexual
> nancy-boys or macho women. I don't think the differences are as utterly obvious
> as they first seem.
Indeed, and the gradient is not only mental/psychological but physical:
there are an amazing number of medical conditions which fall outside
traditionally physically male and traditionally physically female, from sex
chromosome anomalies (http://www.genetic.org/ks/scvs.htm) (between 1 in 500
and 1 in 1000 live births, amazingly!) like XXY to intersexed people
(http://www.isna.org/). All invisible, so most of us accept the male/female
dichotomy we see around us unles we have some reason to dig into the
subject.