F. Scott Fitzgerald wrote that “the test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function”. His formula is justifiably famous, but it’s worth noting that it comes from an autobiographical essay titled “The Crack-Up”, which painfully detailed Fitzgerald’s inability to pass his own test, and resulting descent into alcoholic dysfunction.

Today’s American crack-up springs from similar sources. Imagine a time-traveller from any decade in recent memory arriving in America in January 2024: they would encounter a country that would appear to have gone nuts. Millions of migrants stream illegally into the US at the highest rates in history, while the government in Washington prohibits border states from enforcing Federal law. Meanwhile, major cities such as New York, Chicago and Los Angeles are routinely paralysed by angry demonstrators whose causes change from month to month (this month’s cause is “intifada”). Questions like “should doctors perform surgery on children to change their gender?” and “is it ok for the President of Harvard to routinely plagiarise the work of other authors?” are now seriously debated by reputable media outlets.