but theres more to the story. there were reports of people using a drug called ISRIB, russians mostly, a few years ago. its a drug that impacts the latency of cells, turning on cells that have gone latent due to injury... or for any other reason, reasons we may not be aware of. this drug is basically used in labs in cultures and is very new. people arent supposed to take it. but some people had it synthesized and they tried it anyway of course. most of them reported extremely life-like dreams. one person reported having waking dreams that were so real that even while totally and completely lucid, she was not able to tell that she was dreaming. she was pretty shaken up by it based on the chats. i think she described it as experiencing total insanity. but this tracks. when you are asleep, your model is not firing on all cylinders. part of the reason why the world is "unrealistic" is because your brain is not working as hard as it could to fill in the model in a coherent way. think about the experiences that schizophrenics have, seeing in full fidelity people and things that are totally non existent. all of these considerations together point to the fact that we inhabit models of the world rather than experiencing sensory stimuli directly.