The gender binary refers to the idea that all people identify as one of two genders, traditionally male and female. Within this model, there are only two options for gender, and there is no scale or spectrum in between or a way to exist outside of these two genders all together. This binary model exists predominantly in Western culture, and is incredibly harmful and invalidating to those whose gender does not fit the gender binary model. This model is not an encompassing model of gender, and in fact promotes discriminatory behavior.