The opening stretch of Imtiaz Ali’s latest film, Tamasha, takes some of the biggest risks of any film I’ve seen all year. Opening with a metaphorical gambit that’s downright bizarre (Ranbir Kapoor as a tin man on a treadmill?!) that announces the film’s “all the world’s a stage” conceit, Tamasha then segues into an extended stay in Corsica where the film introduces its two main characters.