Thinking back to the biblical account as described by the witnesses in the Insight book, it seems God had prepared this expanse of water just so he could provide a deluge....if so that is predestination - so much for free will.
Its also interesting that the Bible describes "An earth standing compactly out of water in the midst of water..." very much sounds like they believed in one landmass. The American and Australian continents not having been discovered yet by Middle Eastern humans demonstrates again that humans authored the Bible.