Here's why your question might be confusing:
* Lack of written records: The Incas famously didn't have a written language in the way we understand it. They used quipu, a system of knotted strings, to record information, but it wasn't a direct representation of spoken language.
* Diverse languages: The Inca Empire was vast and encompassed many different languages and cultures. The language of the Inca elite, Quechua, became a lingua franca across the empire, but other languages continued to exist alongside it.
In summary: The Incas were fluent speakers, and their societies relied heavily on oral communication. They just didn't have a written system in the same way as modern societies.