... A strange thing happened on the way to a better world in pursuit of an admirable quest, that is, a world free of sex discrimination where you’re judged on your own qualities and not your sex. Truth and falsity went topsy-turvy. The truth—the silence of sex differences—became dangerous, unmentionable, and in its place the conventional wisdom, which is a ragbag of ideas that have long been extinct but are kept ghoulishly alive by popularity, became the entrenched orthodoxy influencing public thinking, agendas and policy-making, and completely crowding out science and sense.

My aim is to show you why the current orthodoxy should be abandoned and why, if you really care about a fairer world, the science does matter. It matters profoundly. I’m going to take two examples, both about the professions, because they very well epitomize the orthodox litany: how society systematically discriminates against women, and how at work they are victims of pervasive sexism.