It is natural that language should change. Otherwise it would become moribund and inadequate for daily life. Some changes are inevitable, even necessary. Others result from changes in our habits and way of life. Some are the result of adaptation to what is pompously called ‘technology’. Some are capricious and inexplicable. Some pervert the meaning of perfectly respectable words. And there are new words, some of which are necessary to define new things or to express new concepts, while others are entirely unnecessary and become accepted only as the result of a sheepish habit of following where others lead.