The rivers are identified with various “lands” or nations, yet Genesis 2 is describing a time when there were only 2 people on earth. So clearly these nations are place-markers for people at the time the text was written to get a geographical “feel” for the Eden narrative. Indicating strongly that these are the same rivers which flow today. The lands are the same lands that existed at the time the text was written, and the YEC model of a global, continent (and thus, river) rearranging flood is utter nonsense.