What if?

The ideas or seeming knowledge of what you are is completely dependent on memory of experience. Not only is memory unreliable (it is a matter of daily experience) but so too is experience completely random. The conditions which make the settings of an experience can vary: you know yourself to be this person living here and then.
How about John who lived in the medieval times, who had not the first clue of what an atom was, who thought the Earth was flat etc.? What would John know of himself and the world and what would be true about that? Similarly Jenny will be born in 3000 years from now, will be able to travel to distant worlds and meet beings the constitution of which you cannot fathom. She will also have experienced her own body directly on the sub-atomic level, and she will laugh at the idea of people who in the past believed time was real and linear.
What common knowledge makes John's reality just as real as Jenny's and yours? What is beyond experience? Or what is the common ground of all experience? Of what is experience the reflection of? What is the meaning of experience? What is the meaning of meaning? What is real? What is reality? What is? What if this question never ever (in time or non time) would find an answer? What if there is no end to the unknowing? What if knowledge of the self was as relevant to what you are than your neighbour's cutting of his own toe-nails?

What if the unknowing was the only thing needed to be known?