Some years after Alex Mac Farlane, Australian Norrie May-Welby was recognized as having unspecified status.
It also called for the criminalization of deferrable intersex medical interventions.
From a rights-based perspective, third sex / gender options should be voluntary, providing trans people with a third choice about how to define their gender identity.
Those identifying as a third sex / gender should have the same rights as those identifying as male or female.
A sex/gender system which recognizes only the following two social norms has been labeled "heteronormative". Peletz believes our notions of different types of genders (including the attitudes toward the third gender) deeply affect our lives and reflects our values in society.
In Peletz' book, "Gender, Sexuality, and Body Politics in Modern Asia", he describes: For our purposes, the term "gender" designates the cultural categories, symbols, meanings, practices, and institutionalized arrangements bearing on at least five sets of phenomena: (1) females and femininity; (2) males and masculinity; (3) Androgynes, who are partly male and partly female in appearance or of indeterminate sex/gender, as well as intersexed individuals, also known as hermaphrodites, who to one or another degree may have both male and female sexual organs or characteristics; (4) the transgendered, who engage in practices that transgress or transcend normative boundaries and are thus by definition "transgressively gendered"; and (5) neutered or unsexed/ungendered individuals such as eunuchs.