Homosexual men are more likely than heterosexual men to have older brothers –

It is apparently a consistent finding in studies on homosexuality that homosexual men are more likely than heterosexual men to have older brothers – Diamond calls this ‘a surprisingly robust phenomenon

On such research one's adverbs must be  cautious,and  the adjectives sober – as one takes on all the quasi-technical jargon of ‘models’ and ‘triggers’.  Such research can be narrow in its intentions and flexible in its attentions.  In our trans world  surely it would be  more realistic, less anxiety-provoking to be brought up to believe that we are all gay and/or straight unless or until we meet someone who makes us feel otherwise,  instead of being terrorised by the apparent vagaries of their sexuality environmental pathways.

At its  most minimal the so-called science of sex makes us wonder what sex would be if it wasn’t embarrassing. For Scientific method can be just another rhetoric of prejudice and punishment, bigotry without hysteria used to whip up the hysterical bigotry that is always lurking. It isn’t surprising that we want science to inform the prejudices we prefer: what is surprising is that we could ever believe in prejudice-free inquiry. We believe that Science can be  straightforward about some very unstraightforward things 

Nothing is more likely than sexuality to remind us, if we needed reminding, that we can’t live without the category of the unacceptable,  Sexual fluidity is not, in other words, an ideology, something you can believe in and try out.