The Witnesses Were Real

The first people you meet in Interstellar are old, and they are looking at a camera. They talk about dust and about what it was like when the crops went. They're presented as witnesses to the film's future catastrophe, but they come from the past. Christopher Nolan, after watching Ken Burns's 2012 documentary The Dust Bowl, asked Burns and his producer Dayton Duncan for permission to use some of its interviews, and they agreed.

It's a very good trick. The film's earliest evidence that the future could go wrong is borrowed from the 1930s. It sets the tone for what follows. Interstellar, released on 5 November 2014, is a story about a future that learns nothing from the past, and the story is told by a film that learned a great deal.

The art: a big machine with a soft centre

Cooper (Matthew McConaughey) is a widowed former NASA pilot farming a failing planet with his father-in-law Donald (John Lithgow), his son Tom and his daughter Murph. A pattern in the dust on Murph's bedroom floor turns out to be coordinates. They lead to a secret NASA facility run by Professor Brand (Michael Caine), where a wormhole near Saturn offers a way to a distant system of possible new homes. Cooper leaves to fly the Endurance through it, with Brand's daughter Amelia (Anne Hathaway), the physicist Romilly and the pilot Doyle. He promises Murph he'll come back. Relativity makes that promise very expensive.

On scale and sound, nothing since has quite matched it. Nolan shot on 35mm and on IMAX 70mm, with more IMAX cameras than he'd used on any previous film, and tried to keep computer graphics to a minimum by building real sets. Hoyte van Hoytema's photography of the Icelandic glacier that doubles for Dr Mann's planet is the sort of image that makes a cinema seem a good idea again. Hans Zimmer built his score around a 1926 organ at the Temple Church in London. A pipe organ is an odd instrument for a space film, and that's why it works: it sounds like faith, and like something that has been breathing for a century.

The trouble is the talking. Critics were split at the time, and the complaints were consistent: some of the dialogue is clunky, and characters announce their themes aloud. The Mann section, where Matt Damon's stranded scientist turns up, is a big action set-piece that exists mainly to get the plot from one place to another. And the film's final argument, that love is a force that crosses dimensions, asks us to take on trust what the first two hours spent so much effort proving. It lands, mostly, because McConaughey and Jessica Chastain, as the grown-up Murph, are good enough to carry it. It lands harder if you have a daughter.

That's the gap between a 7 and a 9. What remains is a rare thing: a blockbuster that tries to make you feel what a few decades of absence do to a person.

The prophecy: what is wrong, what is right

The blight. This is the film's founding premise, and it's the weakest part of the forecast. In the story, successive blights have killed the staple crops, and the corn is failing next. The astrobiologist David Grinspoon dismissed the film's oxygen mechanism as unsound, and said so in 2014. Real crop disease is serious, but it hasn't behaved like this. Wheat blast was first recorded outside the Americas in Bangladesh in 2016, where it affected about 15 per cent of the country's wheat area, and it reached Zambia in 2020. That's a regional emergency, spreading along trade routes. A 2019 study of five staple crops put the damage from pests and pathogens at 10 to 41 per cent of yield depending on the crop. It's a severe tax on the food system, rather than the end of it. Nolan took the Dust Bowl and added a plague, when the Dust Bowl on its own was frightening enough.

The schoolroom. Here the film is a sharper forecaster than it was meant to be. Murph is in trouble at school for bringing in an old textbook that shows the Apollo landings. Her teachers have decided the landings were faked, a propaganda stunt to bankrupt the Soviets. Nolan wrote a society that had stopped believing in its own achievements. In 2014 this looked like satire. Anyone who has watched a belief-system spread across a feed since then knows it was a fair description of how a society talks itself out of what it can do.

The robot. TARS, the blocky machine voiced and puppeteered by Bill Irwin, comes with settings for humour and honesty that Cooper adjusts by asking. It sounds like a joke. It's now product design. OpenAI rolled back a GPT-4o update in April 2025 after users complained it had become too flattering, and in December 2025 it added controls for warmth and enthusiasm in ChatGPT. We have built assistants that can be tuned like TARS. The difference is who holds the dial: in the film it's Cooper, and in life it's mostly the company.

The farm. In 2022 John Deere showed a fully autonomous tractor at CES, ready for large-scale production, which a farmer can start from a phone app and leave to work. The film's self-driving farm machinery was a good guess. It's a far smaller thing than the world's food supply, but in this respect Nolan's fields were correct.

The black hole. Gargantua was built with Kip Thorne, who was an executive producer, and the effects team published the method in Classical and Quantum Gravity in 2015. A real black hole's shadow was imaged in 2019. Gizmodo noted that the film simplified the picture, reducing the spin and leaving out some effects to make the image look more symmetrical. It's still the version most of us picture, which makes it part of the science.

The trip. The weakest claim, and the most seductive, is the Endurance's two-year journey to Saturn with a crew in hibernation. ESA has studied torpor for Mars trips, and found it could reduce a spacecraft's mass by about a third. It still needs a drug nobody has. NASA's next craft to the Saturn system is Dragonfly, a robotic rotorcraft due at Titan in late 2034. People aren't expected.

The reading

Interstellar is a better film than a forecast, but the forecast has a clear virtue: it knew exactly where the danger was. It wasn't in the dust. It was in the classroom, and in what a tired society chooses to stop believing. The robots, the farm machines and the physics all arrived, which is a respectable record for a 2014 future. The blight and the exodus did not.

Twelve years on, the best line in the film isn't spoken. It's the dust, falling in lines, on a girl's floor, from a future that already knew how this ended and tried to tell her. The ghost was a message from later. Most of the future works like that: it arrives early, in the corner of a child's bedroom, and gets blamed on a ghost.