Celtic Studies is the academic discipline occupied with the study of any sort of cultural output relating to a Celtic people. This ranges from archaeology to history, the focus lying on the study of the various Celtic languages, living and extinct. The primary areas of focus are the six Celtic languages which still survive, or have only recently become extinct: Irish, Welsh, Scottish Gaelic, Manx, Cornish and on the continent, Breton. Many consider the Celtic languages to be the least studied surviving branch of the Indo-European language family. The field has at this time barely been surveyed; this is due to the small number of trained experts.