Awakening Dreams of Reality

Most dreams portray things that are simply not there in the external reality, he says. We hone our guesses and then fashion the best ones into a sort of waking dream - which you gain control over by controlling aspects of External Reality. But am i really to accept that i, myself, has no direct knowledge of the physical world at all, but can only receive or hints of it through flickers and shadows that happen to impinge upon my eyes and other senses? And that what i experience as reality is never more than a waking dream composed of conjectures originating from within myself? You have an alternative explanation? No. Here we sit forever imprisoned in the dark, almost sealed cave of our skull