All three 'genders' are embedded in sexual and social norms of expected and acceptable behavior.
"It's different from women who adopt, who are not breaking sexual norms."
These studies would seem to support the view of a society in which sexual norms are slowly on the change.
Many practical questions arise regarding human sexuality, such as whether sexual norms should be enforced by law, given social approval, or changed.
He also profited from his culture's diverse efforts to redefine sexual norms according to moral or religious belief.
A sexual norm can refer to a personal or a social norm.
One reason, of course, is that matters like free speech, sexual norms and religious symbols are complicated and emotionally explosive.
He considers the number a form of "gender sabotage" against the prevailing sexual norms of the time.