‘Eno’ Review: Creativity, 52 Billion Billion Ways

The key to “Eno” comes near the beginning of the film — at least, the beginning of the first version I saw. The musician Brian Eno, the documentary’s subject, notes that the fun of the kind of art he makes is that it’s a two-way street. “The audience’s brain does the cooking and keeps seeing relationships,” he says.

Most movies are made up of juxtapositions of scenes, carefully selected and designed by the editor. But “Eno,” directed by Gary Hustwit, turns that convention on its head. Writ large, it’s a meditation on creativity. But every version of the movie you see is different, generated by a set of rules that dictate some things about the film, while leaving others to chance. (I’ve seen it twice, and maybe half the same material appeared across both films.)

Eno, one of the most innovative and celebrated musicians and producers of his generation, has fiddled with randomness in his musical practice for decades, often propelled along by new technologies. He agreed to participate in “Eno” only if it, too, could be an example of what he and others have long called generative art.

The word “generative” has become associated with artificial intelligence, but that’s not what’s going on with “Eno.” Instead, the film runs on a code-based decision tree that forks every so often in a new path, created for software named Brain One (an anagram for Brian Eno). Brain One, programmed by the artist Brendan Dawes, generates a new version of the film on the fly every time the algorithm is run. Dawes’s system selects from a database of 30 hours of new interviews with Eno and 500 hours of film from his personal archive and, following a system of rules set down by the filmmakers with code, creating a new film. According to the filmmakers, there are 52 quintillion (that is, 52 billion billion) possible combinations, which means the chances of Brain One generating two exact copies of “Eno” are so small as to be functionally zero.

This method is unusual, even unique, among feature-length films. Movies are linear media, designed to begin at the beginning and proceed in an orderly, predictable fashion until the end. The same footage appears in the same order every time you watch.