If you walk the streets of Ditchingham in East England, you may pass a married couple with a unique style. Liberty Avery, 24, and Greg Kirby, 29, have decided to dress and live as if it were the 1940s. From their clothing to the car they drive to the food they eat to the entertainment they consume, they have dedicated their lives to a World War II aesthetic.

The couple is immediately recognizable in public because personal style has changed so radically from decade to decade. The 1950s had its greasers and its poodle skirts; the 1960s followed with hippies and beehive hairdos. The 1970s brought an unholy alliance of bell-bottoms, sideburns, long hair, and polyester, and the 1980s washed it all away with oversized clothes, fluorescent patterns, acid-washed jeans, and enough hair spray to kill half the species on earth.

And who can forget the giant flannel shirts and Doc Martens of the early 1990s, which later gave way to frosted hair tips, puka shell necklaces, and oversized jeans?

Yet at the advent of the new millennium, a weird thing happened: We stopped careening between drastically different styles. Take a look at a picture of a typical person from midyear 2000 and you will notice something important: nothing. He looks almost identical to someone walking around in 2024, from dress to hair style. (It is difficult to look at that picture and not be envious of that person, who has yet to experience September 11, the Trumpification of American politics, and Rebecca Black’s song “Friday.”)

Look at that person in 2000 and think back a quarter century, which will land you in 1975. Then go back another quarter century to 1950, and 1925, and so on. The typical person from each period would look at the other as if he were just coming from a Halloween party. If someone from 1925 walking down the street passed a standard person from 1975, he would likely run to the nearest police station to report an escaped mental patient.

But the change in style over the past 25 years has been infinitesimal. Which brings up an important question: Is style over? And why is this happening?

In 1965, Susan Sontag noted that new styles of art, cinema, music, and dance “succeed one another so rapidly as to seem to give their audiences no breathing space to prepare.” But as the New York Times’ Jason Farago wrote in response to her last year, “today culture remains capable of endless production, but it’s far less capable of change.”

Sure, there are always celebrities and weirdos testing fashion’s boundaries, as David Bowie did with his gender-bending getups in the 1970s. And some celebrities like to flaunt their extravagance at costume balls like the Met Gala. But at this point, it seems we have seen everything there is to see.

Or perhaps fashion changes have been retarded by the internet, where taking aesthetic chances can immediately result in condemnation by the mob. Better to play it safe than to become “the guy who tried to make sleeveless sport coats a thing.”

But it is also possible that the internet pulls all the style choices we made in the past back to the forefront, mixing them into a modern bouillabaisse of trends. In the past, a fashion like bell-bottoms would come and go, and everyone would forget how silly it looked. But with the internet, fashion history and trends are always a few keystrokes away, as fresh as if they were happening now — in a sense, we are living in all the generations at once. We could simply be an amalgamation of all the styles that have come and gone.

The slowdown in fashion innovation has been exacerbated by the fact that the people most likely to set trends, the wealthy, seem to have little interest in pushing sartorial barriers. No one has more access to fashion than people like Elon Musk and Mark Zuckerberg, but the style among wealthy tech entrepreneurs is to dress as if you were excited about a deal to get 30 percent off a plate of riblets at Applebee’s.

And even if someone does have a personal style in 2024, it is typically a throwback. Maybe we know of an old hippie who refuses to leave the world of tie-dyed shirts or a goth who would fit right in with the pale black-clad kids of the 1980s. As the Times’ Farago noted, modern culture simply mines the oldies: “Harry Styles is rocking in the ’80s; Silk Sonic is jamming in the ’70s; somehow ‘Frasier’ has been revived and they barely had to update the wardrobes.”

If you want to live your life dressing like it’s the 1940s, by all means do so. But it would be more impressive if you dressed like the world you want to see in the 2040s — as long as it isn’t jeans and a T-shirt.