When you think the "City of Enoch" was translated and also the in our faith we know there were ambassordor or dignitaries to set up this planet, Angel men who visited Lot,thesebites and pieces of the knowledge which it self reveal we do not have all of the word of the Lord given to us.
At least the LDS has a promise that there is 2/3 of the Book of Mormon yet to come forth I am sure many of these obvious unanswered clues will get fulfilled!
Does that mean that Mormons are waiting to get a clue? (grin)