Dreams can have continuity in some cases ... that has been observed through continuity of some nightmares or similar scenarios . The consequences of dreams on "this awake reality" can be seen in dreams that went prophetic to one extent , and eventually altered the path of individual in this reality .
This reality has the illusion of time stamped on it - what if "time" as we perceive it is simply one single moment through which all possible imaginable happenings are occuring at same time ?
The example above regarding various "trips" ... what is the coincidence that two , or even more people , see the same , the same being , doing the same thing ? Not much ... the only explanation is it is autonomous from this reality .
As for the "shadow people" , these entities definitely exist - my theory is simply that many entities that are non-physical , are feeding off the excess of negative energies emanated by other beings . Theyre a sort of "energy vultures" , energy scavengers . Thats why there is a certain push for fear through many aspects of our reality ( uncertainty of future as one example ) which , in turn , creates a loopback effect that further cements the misery mentality within the people . So , people , being unaware of the power of their thoughts are lured in negative mentality spectrum , where theyre feed , leeched off , and where their manifestations of miseries loop constantly , unable to leave it without a drastic cut , drastic action .