An Indigenous community in the Brazilian Amazon with a unique language that lacks recursion and other conventional linguistic features. Their cultural value of the immediacy of experience plays a key role in shaping their communication.

An influential American linguist whose theory of universal grammar is challenged by Everett's research. He posits that recursion is a fundamental aspect of human language.

Daniel Everett's wife and partner in fieldwork; she provided crucial support in managing family life and collaborating on research among the Pirahã. Her background and resilience were vital to their extended stay.

A Brazilian federal agency team working to survey and secure land rights for the Pirahã, protecting them from external threats and ensuring their autonomy.

A missionary-linguist who was the first to establish contact with the Pirahã, providing initial phonemic analyses and translations that formed the basis for Everett’s later work.

A missionary who worked with the Pirahã before Everett, contributing to early analyses of their complex tonal grammar and helping build logistical support for future research.