According to Rajesh Mapuskar who wrote and directed Ferrari Ki Sawaari, how to write a scene that is really tight on paper was communicated to him by Vidhu Vinod Chopra. If you want to make scene 5 minutes long on screen, then write write only two pages of dialogues, which corresponds to two minutes. The remaining time can be used for the treatment of the scene. The tighter the scenes, the faster a film moves and the less time the audience has to think.