***SPOILER ALERT***

So, everyone has their theories about what really happened. I have one thing I noticed, that not a single person has mentioned anywhere...

Moll (Leo's wife), shows up in just about every single dream level. Now, if I remember the dreamstate rules correctly, all projections are brought in by the person who is dreaming (except for the people that are hooked up to the briefcase thing). That being said, Moll is a projection of Leonardo DiCaprio's. Does that not mean he was dreaming the whole time?