Or does this not prove that gender (note: gender , not sex ) is a social construct? Men and women may be more inclined towards certain behaviours because of biology - women tend to be more empathetic and better caregivers, men on the whole have better spacial awareness and are more likely to enjoy activities that involve building things or solving logistical problems, but telling men or women that going outside of these gender norms means that you are the wrong sex, or this nonsense "non binary" crap is a nonsense.