Will one researcher's discovery deep in the Amazon destroy the foundation of modern linguistics?

A Christian missionary sets out to convert a remote Amazonian tribe. He lives with them for years in primitive conditions, learns their extremely difficult language, risks his life battling malaria, giant anacondas, and sometimes the tribe itself. In a plot twist, instead of converting them he loses his faith, morphing from an evangelist trying to translate the Bible into an academic determined to understand the people he's come to respect and love.

Along the way, the former missionary discovers that the language these people speak doesn't follow one of the fundamental tenets of linguistics, a finding that would seem to turn the field on its head, undermine basic assumptions about how children learn to communicate, and dethrone the discipline's long-reigning king, who also happens to be among the most well-known and influential intellectuals of the 20th century

Chronicle of Higher Education