It's like traveling back home. You know the route, you know the signal, you know the lane, you know the speed breaker and you know the destination. That's applicable for Laaga Chunari Mein Daag too. 10 minutes into the film and you know what the story is, you can even guess the twists and turns the story may take and you can [successfully] read what the climax would be. Predictability -- that bogs Laaga Chunari Mein Daag down.