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Deep in the Amazon rainforest lives a small society that has challenged some of our most basic assumptions about language, numbers, time, memory, and even how human beings organize their lives.
For decades, researchers studying them have found features so unusual that they have sparked major debates in linguistics and anthropology.
They may offer important clues about which parts of human thought are universal and which are created by culture.
Learn more about the remarkable Pirahã people on this episode of Everything Everywhere Daily.
There is a good chance that the vast majority of you have never heard of the Pirahã people. They are a small tribal group that lives deep in the Amazon Rainforest. Current estimates suggest that between 500 and 900 Pirahã live in the rainforest.
They are not an uncontacted people. The first contact with outsiders likely occurred sometime in the late 18th or 19th century. They know other people exist, and they occasionally trade and make contact with outsiders.
Outside of their very small territory they inhabit in the state of Amazonas, near the Madeira River in Brazil, they have had almost no impact on the rest of the world.
So, why would a small band of people with little contact with the outside world be the subject of an episode? Because what researchers have learned about these people has upended much of what we thought we knew about language and social organization.
For starters, the Pirahã live an existence which could accurately be called primitive. The Pirahã do not have a materialistic culture. This isn’t because they have some anti-materialistic worldview; it’s just that they don’t have many things.
While they traded a few items with outsiders, like a pot or pan, the average Pirahã might have only a hammock, bow and arrows, fishing gear, knives or other tools, clothing, baskets, and sometimes a canoe. That’s it.
Because the Pirahã live so light, they are extremely mobile. They have no permanent structures, nor do they build any permanent monuments. Groups could move according to river conditions, food availability, fishing, hunting, and Brazil-nut harvesting.
During the wet season, they will move to higher ground away from the river and live in smaller groups. During the dry season, they will move to the banks of the river and live in larger groups.
This mobility is key to understanding many of the unique aspects of Pirahã society.
For starters, the Pirahã are extremely egalitarian. There are no leaders, priests, or chiefs. In fact, no one can really compel anyone to do anything in Pirahã society.
This, in and of itself, is unique, as it is found in almost no other society anywhere, including other hunter-gatherer groups.
This sort of extreme egalitarianism can exist because the Pirahã are so mobile. If you don’t like someone, or if someone tries to force others to do their bidding, you can just disappear into the forest. This is the same solution to most interpersonal disputes that might arise.
The most important unit in Pirahã society is the couple. I should emphasize that it is the couple, not the family. Ethnographers use the Pirahã term kage for a relationship between a man and a woman, although the term does not necessarily imply children or even sexual relations in every case.
A couple can function with considerable autonomy, sometimes leaving a settlement together for days or weeks to fish, gather food, or travel. In that sense, the pair is one of the strongest organizing units in Pirahã society
A particularly interesting feature is a preference for cross-cousin marriage. For a man, a cross cousin would be either his mother’s brother’s daughter or his father’s sister’s daughter. This sort of marriage is not mandatory, but it is common.
Marriage also creates important economic relationships. Men traditionally do much of the fishing, and a married man’s catch is not only for himself. It circulates through his wife to daughters, stepdaughters, his mother-in-law, sisters-in-law, and other related women. In this way, marriage creates channels through which food moves between families.
Pirahã children are generally raised through close participation in everyday adult life rather than through highly separated, child-specific institutions. From a young age, they spend much of their time around adults and older children, watching and gradually joining in fishing, gathering, food preparation, and other practical activities.
They also appear to be given a relatively high degree of independence and freedom of movement compared with children in modern Western societies. As soon as a child is able, they can start gathering food, which can happen as early as six to eight years of age.
The Pirahã do not practice any form of food preservation or storage. They eat what they catch as soon as they get it.
The Pirahã traditionally sleep in short, irregular periods rather than one long, fixed nighttime block. People may nap during the day, wake and socialize or work at night, then sleep again later, with sleep shaped more by immediate needs than by a strict schedule. They rarely sleep more than 2 hours straight.
Perhaps the most interesting part of Pirahã society is what has been called the immediacy-of-experience constraint. In other words, the Pirahã have taken the concepts of living in the moment and seeing is believing to an extreme.
They care only about things they can see and experience firsthand, or things experienced by people they know.
Linguist Daniel Everett first discovered this while spending time with the Pirahã in the late 1970s as a missionary and learning their language. He tried to tell them about Jesus, and the question they constantly asked him was, “Did you meet him, or did someone you know meet him?”
The Pirahã couldn’t get past the immediacy of knowing something that wasn’t experienced firsthand. It wasn’t a religious or theological problem. It was an epistemological problem.
This immediacy of experience has other far-reaching implications. For starters, the Pirahã have no real sense of history. There are no stories of ancestors from long ago. No epic tales. No legends.
The Pirahã are also among the only people in the world with no creation story. When asked how they thought the world was made, they didn’t know why they should care about something that happened so long ago.
They do have a sense of the supernatural, but they don’t have a formal religion. They claim to experience spirits firsthand, which is how it fits into their experiential worldview. Spirits can take the form of jaguars, trees, or people.
The Pirahã also have no concept of drawing or art. They make necklaces, but they do so to ward off spirits, not for artistic expression.
By the same token, they have absolutely no concern for the distant future. Their concern is in the here and now.
While many aspects of Pirahã culture are unique, that isn’t the most interesting thing about them. What has really interested researchers is their language.
The Pirahã language is so different from other languages that it has thrown a wrench into theories about language development and has sparked many debates.
The Pirahã call their language Apaitsiiso, roughly “that which comes out of the head.”
Pirahã has several extremely unusual features. Pirahã has one of the smallest inventories of consonants and vowels documented in a spoken language.
Depending on the linguistic analysis, there are roughly three vowels and around eight consonantal sounds, plus meaningful differences in tone.
Because there are so few sounds, tone, rhythm, and stress carry a great deal of information. Because those things can convey so much information, it is possible for the Pirahã to communicate while whistling, humming, or eating.
Whistled speech is particularly useful while hunting because people can communicate without producing ordinary speech that might alert animals.
The most famous Pirahã linguistic controversy concerns recursion. Recursion occurs when a structure contains another example of the same type of structure.
An example of recursion would be: I know that John said that Mary left.
It is a sentence embedded inside another sentence. In principle, this process can continue indefinitely.
Noam Chomsky and colleagues famously argued that recursive computational ability might represent the central distinctive feature of the human faculty of language.
Everett argued that Pirahã does not grammatically embed clauses in this way. Pirahã speakers might use a sequence more like: “John spoke. Mary left. I know this.”
The details of recursion are pretty technical among linguists, but it has also been hotly debated. A major 2023 review called the entire controversy the “Great Pirahã Brouhaha,” reflecting how deeply it affected modern linguistic anthropology.
Pirahã also has no numbers. They literally have no words that represent integers, including the number one. The only words they have represent a small amount and a somewhat larger amount.
Researchers concluded after experiments that the Pirahã had “no linguistic method whatsoever for expressing exact quantity.”
Psychologist Peter Gordon conducted famous experiments in which Pirahã participants had to reproduce quantities of objects. For example, he might arrange several batteries in a row and ask someone to place an identical number below them.
When the objects remained visible and could be matched directly, performance could be quite good. But when memory was introduced, performance deteriorated as quantities increased.
Gordon interpreted these results as evidence that having number words changes how people mentally represent exact quantities.
Because they have no numbers, they have no concept of age. Instead, age is understood more relationally and in terms of life stages, such as being a child, a mature adult, or an older person.
In addition to lacking numbers, they also lack words for colors. To express a color, they would simply compare it to something else. To describe something red, it would simply “look like blood,” or green might “look like a leaf.”
While the Pirahã language seems very simple, there is one aspect of it that is very complicated: verb endings. There are at least 14 different verb suffixes, many of which convey information that is unique to their experiential worldview.
Different endings can indicate that the speaker heard it from someone else, inferred it from evidence, or has direct knowledge of it. For example, Pirahã can distinguish something like “he left, I was told,” from “he left, I infer this from his footprints,” and “he left, I know directly,” by changing material attached to the verb.
This is information we wouldn’t normally even bother to convey because we don’t find it relevant.
While we’ve learned a fair amount about the Pirahã, we’ve really learned more about how societies and languages develop. The Pirahã have helped challenge the older idea that societies and languages evolve along a single ladder from “simple” to “complex.”
Their society shows that a small, mobile community can remain highly adapted to its environment without developing agriculture, a sense of history, numbers, or political institutions. That has encouraged anthropologists to think more in terms of different pathways societies can follow rather than fixed stages of progress.
The Pirahã have also been important for understanding numbers and cognition. Experiments suggest that people can perceive quantity without number words, but exact numerical memory becomes much harder without a symbolic counting system.
This supports the idea that tools such as numbers, writing, and calendars do not merely express thoughts we already have. They can actually expand what humans can think about easily and precisely.
In linguistics, the Pirahã have been even more influential. Their language helped intensify debate over how much of grammar is biologically universal and how much is shaped by culture.
The Pirahã are important not because they are a relic of some earlier stage of humanity, but because they show just how many different ways human societies can organize themselves.
The Pirahã are different from almost every other society on Earth in ways that some didn’t even think were possible. The more we have learned about them, the more we have learned about ourselves.
The Executive Producer of Everything Everywhere Daily is Charles Daniel. The Associate Producers are Austin Oetken and Cameron Kieffer.
I have a couple of corrections to make.
In the episode on the Great Awakening, I said that Benjamin Franklin saw George Whitefield in 1793. Franklin died in 1790. I transposed the last two digits, and the correct date should be 1739.
Another correction is from the Helen Keller Episode. In that episode, I cited a quote about the difficulties of being a woman to Helen Keller. It should have been attributed to Georgina Kleege, who was speaking about Helen Keller. It did not come from Helen Keller herself.
Listener Joe Chite gets credited with the assist for pointing it out.
Mea culpa, mea culpa, mea maxima culpa.
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