Language and its phonological progress (An example as the persian language)

The language was created to connect people and it is the natural thing in people's life. Sounds were used as language signals in the generation of language. The word built by sounds’ junctions, testifies considered theme. So when users which know how to use those language elements, speak, they know place and number of the elements. For example, there are six sounds in school and its order is s-c-h-o-o-l. If there is a change of a letter's place in this word, it may testify to the other meaning in considered theme. But although order of sounds’ junction is in any position, its main aim is to create connection between people.