And then, of course, there is the mark of Cain. Since there were only 4 people around at the time, just who was God marking him to be identifiable by?
Not to mention, of course, genesis 6:4 "And there were giants in the earth in those days......."
Who might that have been?
There is a fifth dimension, beyond that which is known to man. It is a dimension as vast as space and as timeless as infinity.