Psychology
Social Construction of Gender Roles Across Cultures
Quick fact
In many societies, the division of labor, personality traits, and even color associations (like pink for girls) are not universal but change dramatically across cultures; for example, in some traditional cultures, weaving is a male activity, while in others it is exclusively female.
Why this is interesting
You might assume that 'real men' and 'real women' are defined by biology, but imagine a world where all the supposed 'natural' behaviors are completely opposite—because in some cultures, they actually are.