THE INSTANT SUNDAY TIMES BESTSELLER`In the first decade of this century, it was unthinkable that a gender-critical book could even be published by a prominent publishing house, let alone become a bestseller.` Louise Perry, New Statesman`This rigorous and brave book nails the absurd idea that sex is just a ”social construct”` David Aaronovitch, The Times`A tour de force.` Evening StandardKnowing more has never meant more.Gender identity ideology is about more than twitter storms and using the right pronouns. In just ten years, laws, company policies, school and university curricula, sport, medical protocols, and the media have been reshaped to privilege self-declared gender identity over biological sex.People are being shamed and silenced for attempting to understand the consequences of redefining `man` and `woman`. While compassion for transgender lives is well-intentioned, it is stifling much-needed inquiry into the significance of our bodies.If we recommit to our liberal values of freedom of belief, freedom of speech and robust debate, we scan de-escalate this most vicious of culture wars.