Sapir and Whorf Linguistic Theory
Sapir and Whorf postulated that grammar and language are part of the mental process, thus they help to shape the way an individual interprets and views the world around them. However, the theory has always been controversial because people tend to see language as a tool created by humans instead of a mold that shapes people. By accepting this theory one must accept that humans do not have complete control over language, allowing a language to die out is as much a loss as any other extinction, and forcing people to adopt a new language forces them to change the way their mind works.