The Conspiracy: Throughout the movie when we see Cobb’s (Leonardo Dicaprio) spinning top, we aren’t actually seeing his totem. His real totem is his wedding ring.
The Evidence: This evidence is more of a grasp at interpreting the ending than anything. Cobb always take the ring off in the real world, but is always seen wearing it in the dream world. At the end of the movie he has no ring on. Interpret this one how you wish.