Memories of the 28th Century

I asked someone what I should write about next, and the response that I got was, "Mysteries, the unknowable."
That is a fairly good topic, and it is somewhat related to what I have written along the lines of consciousness, epistemology, and Turing test, etc. Then that person suggested that I write about god, the unknowable. That's completely different, because there are many Gods and Goddesses, and most of them are quite knowable, and some are downright friendly, so that can't ...