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 Standard Knowing more has never meant more. Gender identity ideology is about more than twitter