Trump and Musk are obsessed with genetics – but there’s no science behind their simplistic views

^{“Donald Trump speaking with supporters at a campaign rally at the Prescott Valley Event Center in Prescott Valley, Arizona” by Gage Skidmore licensed under CC by SA 2.0} 

Like so many of us, I was dispirited to wake up a few weeks ago to learn that Donald Trump will be back in the White House. This time he was aided by the world’s richest man and professional spaceship-crasher, Elon Musk. Among the many charming aspects of their partnership is a fondness for some highly unsavoury views on genetics. Trump is an enthusiastic advocate of “racehorse theory”, which he shares with white supremacists; the belief that he is personally superior and that this is rooted in his “good genes”. It’s a vapid idea, but it directly informs his toxic views on immigration, where he argues the country needs to be shielded from the “bad genes” of outsiders.

Meanwhile, Musk has his own equally baffling take on genetics, infused with a characteristic messiah complex. Like some of his fellow tech moguls, he is determined to “save humanity” by ...