Scientific experiments

The peculiar career of John Bumpass Calhoun (1917-95), the psychologist, philosopher, economist, mathematician and sociologist who was nominated for the Nobel Peace Prize and was the subject of a glowing article in Good Housekeeping, comes accompanied with more than its fair share of red flags. He studied how rodents adapted to different environments and specifically how the density of a population affects an individual’s behaviour. He collected reams of data but published little, and rarely in the mainstream scientific journals. He courted publicity, inviting journalists to draw from his studies of rats and mice apocalyptic conclusions about the future of urban humanity. Charged with reducing the rat population of Baltimore,

Despite being a twin myself, I wasn’t necessarily disposed to love William Viney’s Twinkind, a book for which the phrase ‘lavishly illustrated’ might have been invented. Much writing on twins intended for the general reader (including recent fiction such as Brit Bennett’s bestselling The Vanishing Half) has been produced by non-twins, or writers who have twins in their family. The emphasis is often on how twins appear to the singleton majority, lazily depicting them either as freaks of nature or prodigies of psychic connection. Indeed, Twinkind’s visual component seems to be asking the reader to look at twins from the outside, while its title appears to encourage us to see