The prime purpose of cinema is to serve social cause, not entertainment. The basic purpose of a film festival is to evolve cinema and not merely attract tourists. It is of course desirable if a film festival becomes catalyst to enhance cinema-tourism. These were the observations of Jahnu Barua a renowned film director in India who has a number of prize winning films to his credit. Mr. Barua was interacting with the media persons at 45th International Film Festival of India (IFFI) in Goa today, after screening of his Assamese film Firingoti in the festival.