Tibetan Buddhists have something called dream yoga. You go to the museum in your pajamas and then you get to sleep under a Buddha. And somewhere in the night you'll be woken up by these people in white lab coats or whatever. They're going to immediately ask you about your dreams. So, night after night they will take that. And then it is analyzed. Not in a Freudian sense, but for this purpose,. To see that there is no difference between waking and dreaming.