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This is exactly the thought behind the Hindu philosophy of Advaita (non-dualism). Not only does it argue that our state of consciousness and our state of dream are identical but also posits that in order to switch between them we have a thirst state of deep sleep. It then argues that all of these three are not the ultimate state of consciousness but there must be a state which experiences all these. Not only is this the highest state of consciousness but it should also be universal i.e. all of us are the same consciousness.

They missed putting this in the article. Would have been awesome!