How does it shoot my assumption down in flames? There is archeological evidence that religions and deities predate scriptures quite considerably - perhaps as long ago as 30-50,000 years. I suggest you look up "Paleolithic Religion". Yes, there is some doubt as to what the archeology means (such is the nature of archeology of periods that predate the written word) but it is widely accepted that religion began during this time... and that they had their versions of gods long before any scriptures were written. Naturally these are not the monotheistic religions or deities, but rather pantheistic or animist etc. Regardless of their nature, it remains, to me, more rational that as our understanding of the natural world improved, that our conception of gods was amended to fit that understanding, and will continue to be so amended. At least for those who still wish to believe.