Linguistics
A language with no words for exact numbers, not even 'one'
The Pirahã, an Amazonian people, use only relative quantity words like 'few' and 'many' — researchers found no way to express an exact number in their language at all. In matching tasks, Pirahã speakers performed accurately without a memory component but grew inexact once one was required, suggesting number words are a cultural tool for memory rather than an automatic feature of language.