Thanks to an aggressive propaganda capaign, the idea that women are paid less than men for doing the same work has persisted for decades despite a mountain of data to the contrary. Politicians — particularly Democrats — love to trot out the apples-and-oranges comparison of men’s and women’s pay in order to garner votes.

On Tuesday, conservative commentator and senior fellow at the Hoover Institution, Thomas Sowell, took to debunking the myth yet again.