There are two ways to challenge politically correct orthodoxies. One is to toss off outrageous remarks designed to épater les bourgeois. This requires little and accomplishes less. The other is to take the commanding orthodoxy, put it under a microscope, and dismantle it piece by piece. This is what Lawrence Mayer, an epidemiologist trained in psychiatry, and psychiatrist Paul McHugh have just done to the regime of gender and sexuality politics.

In a lengthy report for the journal the New Atlantis, Mayer and McHugh survey a broad expanse of the scientific literature on gender and sexuality and demonstrate that much of what has been foisted on the culture in recent years in the name of science has little solid basis in scientific research. Their conclusions: (1) “The understanding of sexual orientation as an innate, biologically fixed property of human beings—the idea that people are ‘born that way’—is not supported by scientific evidence.” And (2) “The hypothesis that gender identity is an innate, fixed property of human beings that is independent of biological sex—that a person might be ‘a man trapped in a woman’s body’ or ‘a woman trapped in a man’s body’—is not supported by scientific evidence.”