I meant it for the sexual orientation not for the genders. 

There's a lot of misunderstanding when people talk interchangeably for sex and gender. 


We do?

Where do you see the third, fourth, fifth etc? And what are you relying on to create/generate those categories?

denlillaapan

science

Biological sex is not as simple as male or female

IamSINGLE

> The shifting of emphasis from it being a correctable environmental problem to a social issue of lack of acceptance.

Can you quote from the article where you see the shift of emphasis as you mentioned.

* First of all the writer is talking about sex determination not the environment. 
* He's criticizing US president's recent order about sex.  
* He also presents scientific descriptions to prove his point. 

This, It simply addresses that Trump is wrong while signing the executive order that there are only two sexes — male and female. 

(And we all know that there aren't only two. Don't we?)