You are absolutely right in that the map itself does not predate the discovery of South America, of course. I was referring to the conjecture that information within the map was supposedly garnered from other sources which, accoring to Piri Ri'is may have been "ancient sailors".

I will look forward to your book with great interest! I've already read through the 4 chapters you posted on line and i'm very much looking forward to reading the rest!

Are there any theories as to who the civilization that would have inhabited the South American continent have been?