The San People Connection: Why The Alien Clicks Sound Like Earth's Oldest Language

This is a coincidence almost too tidy to be coincidence. A Spielberg-Koepp screenplay does not put click consonants into the mouth of an alien-influenced broadcaster without knowing exactly what that does to the audience that already knows what clicks signify in human linguistics. It is a gesture. The question is what gesture.

Three Reads

Read One: The aliens have been here before. The most popular fan interpretation. If the click family is the oldest human linguistic structure still spoken, then click consonants are humanity's deepest sonic inheritance. The aliens "speaking" through Margaret in clicks is the screenplay arguing that the original signal — the first contact — happened 100,000 years ago, and click languages are the linguistic fossil left behind. This is ancient-astronaut framing dressed up as serious anthropology, and it is exactly the kind of move Spielberg has been willing to make since Indiana Jones and the Kingdom of the Crystal Skull.

Read Two: The aliens chose the substrate carefully. A more interesting read. If you are an extraterrestrial intelligence trying to communicate with all humans at once, and you have to choose a phonetic system that does not privilege any modern human language, click consonants are an elegant solution. They appear in only one human language family, so they do not signal preference for English, Mandarin, Spanish, Arabic, or any other dominant tongue. They are equally foreign to almost everyone. By using a phonetic system that maps weakly onto every contemporary language, the signal is universally strange and therefore universally fair. The aliens did not choose clicks because they are an alien thing. They chose clicks because they are the most neutral way to break into human auditory attention.

Read Three: Spielberg is making a point about who hears first. The most uncomfortable reading. The San people, in this frame, are the population on Earth whose linguistic substrate is closest to whatever the aliens are broadcasting. If Disclosure Day follows the implication, then the people whose languages already contain clicks — San communities in southern Africa — would be the first humans to understand the message without translation. Margaret Fairchild, an American meteorologist, is just the broadcast vessel. The actual "first contact" event in the film, narratively, may belong to a community the studio has no plans to show on screen. That is a powerful and politically charged choice. Whether the film actually makes it is the third-act question.

What The Trailer Lets Us Confirm

• The clicks Blunt produces include both lateral and dental click consonants. Both are present in modern Khoisan languages. Neither appears in standard English phonology.
• The cadence of the clicks — not the individual sounds — matches a syllabic rhythm that is closer to a tonal language than to English. This is a deliberate performance choice by Blunt and her dialect coach.
• The sustained tone Williams underlays beneath the clicks falls within a frequency band that matches the formant resonance of a human throat, not a synthesizer. Whatever is happening to Margaret, the source is acoustic, not electronic.

None of that proves the San-people interpretation. All of it is consistent with it.

The Spielberg Pattern

Spielberg has a 30-year track record of putting real-world anthropology into his science fiction in ways that the marketing does not flag. Close Encounters's five-note motif was built on a real musical structure used in cross-cultural communication studies. A.I.'s flesh-fair sequence drew from primary-source carnival historiography. Lincoln was technically a period piece, but it used 19th-century parliamentary procedure as the dramatic engine in a way that no studio note would have approved if the screenplay had not been carrying it.

If Disclosure Day is building its alien language on a foundation of actual Khoisan phonetics, that is exactly the kind of detail Spielberg would not announce. It is a layer the film leaves for the audience that already knows.

The next time you watch the broadcast scene, listen for the lateral clicks — the ones that sound like a horse's hoof on cobblestone, made with the side of the tongue. Those are the giveaway. They do not exist in any major modern language outside southern Africa. Their presence in a Spielberg film about first contact is doing work the trailer does not tell you about.

Disclosure Day opens UK June 10 and US/IMAX June 12, 2026.