When he used to teach filmmaking at Columbia University, reputed director Milos Forman's first lesson to aspiring writers was as follows: "If your story tells the audience two plus two is four, it has no reason to exist." This simply meant that if a story only reaffirmed an audience's pre-existing beliefs without ever giving them a fresh perspective, the storyteller had failed his craft.
Most filmmakers refuse to adhere to this very simple rule for a myriad of reasons. And in Firangi producer/star Kapil Sharma and writer/director Rajiev Dhingra do not buck the trend.