Are "thoughts" blockades of brain receptors, "dreams" only "cleaning work"?

Everybody knows that our brain has quintillions of receptors constantly being blocked and being unblocked (like GABA or NMDA receptors). During daily activities those constantly are blocked and unblocked. Sometimes however receptors keep being blocked and must be unblocked by scavengers, if impossible to be unlocked those receptors are non functional and remain non functional. This happens Millions of times per hour 24 hours a day. Receptors producing our interaction with the environment (optical, acoustical, olfactory) or "thoughts" and "ideas" however being unblocked during our conscience is working would produce a stimulus we could not distinguish from a real one and would make existence in reality impossible. Those are unblocked during sleep, producing "dreams". If pathologically this mechanism occurs during being awake, we have "hallucinations" or "psychosis". If we don't sleep for long. we'll get those symptoms. Receptors being blocked permanently reduce our ability of intellectual work, increasing with age. Pathological scavenging systems or defect receptors not being possible to be cleared permanently produce Alzheimer disease or dementia. This however would mean that "dreams" are purely random, caused by receptor cleaning activities during sleep and our conscious mind the next day tries to find an explanation of those strange "ideas", which in reality are not related to each other at all. That makes "dream interpretation" bogus science, searching for cures of Alzheimer and dementia must identify the receptor systems producing "thoughts" and even more: the scavenging system being active during sleep. Do you agree? Alternative "thoughts"?