Whoa! At least that clarified a lot of points!

But still he didn't exist in reality's process but a synthetic creation of the Fayth! IOW they DID exist but not as "real" people. They weren't part of Spira's history and they never experienced the Machina War between Bevelle.

And another thing I still haven't figured out, how did Jecht get stranded in Spira ten years ago?