De Beauvoir’s discussion of Hegel and Marx (who adapted Hegel’s philosophy to the situation of the modern capitalist economy) is a means of showing that political struggle has meaningful consequences. For Hegel, revolt was part of the inevitable progress of history, and so did not change history’s course—which means that the free will of the oppressed does not come to bear on the structure of society as a whole and the freedom of all society’s members. Marx showed that class struggle is part of a drive for freedom, and de Beauvoir seems to agree with this part of the Marxist picture of social change (but she still disagrees that revolution is a
necessary product of people’s objective social conditions—instead, she thinks it is something they must choose to do).