Commentary How did we get from common sense on biology to the erasure of women’s sex-based rights? As Ernest Hemingway said of how he arrived at bankruptcy, “Gradually, then suddenly.” The blueprint for “suddenly” was drafted in Yogyakarta, capital city of Indonesia’s island of Java. It was to Yogyakarta, in 2006, that a group of trans activists and human rights professionals—including a dozen former UN special rapporteurs and committee members—repaired, there to draft a set of 29 principles. Although not legally binding, the Yogyakarta Principles would, they hoped, furnish a philosophical template for global policymakers in all matters pertaining to “gender identity” and the rights flowing therefrom. Principle 3 was pivotal in establishing the “trans women are women” meme that spread like a mushroom cloud over the entire West, its radioactive dust infiltrating every nook and cranny of our legal, health, sport, pedagogical, and cultural institutions. Principle 3 states that …