“But speech must be decoded by other systems in the brain as well, including systems for semantic memory and syntax. Speech is open, inventive, improvised; it is rich in ambiguity and meaning. There is a huge freedom in this, making spoken language almost infinitely flexible and adaptable — but also vulnerable to mishearing.”
https://www.nytimes.com/2015/06/07/opinion/oliver-sacks-mishearings.html?_r=0