I was reading this Wikipedia article. It is describing the major phonological changes in English over a period of time but no reason is given for any changes.
Kindly correct me if I am wrong, the changes occurred because majority of people started to use some other phonetics and due to this the phonological changes had occurred.
Kindly shed some light on other possible reasons for phonological changes. Also, what are the factors on which dictionaries adopt new words and new phonetics.