I've always believed that the theoretical mind exists in the present while the physical mind exists in the past...
And that dreams are a connection of one's self to the present.
And that deja vu is just recalling a memory your theoretical mind has experienced and is now being experienced by your physical mind.
So basically, we, as we are, awake and living in the present, is actually living in the past.
I have yet to know how to link the two minds in a way other than dreaming...
I want to experience the PRESENT with my physical mind.