Aeon Strengths: How do they transform into what they are?

[Little Blue]

Lulu: "The Fayth are people who gave their lives to battle sin."

Basically this means that the Fayth only existed to destroy Sin. They dissapeared after Sin was defeated by Yuna, so it would not be possible to create more fayth. pointless too..

This is said when they had no idea how corrupted Yevon is about and this is what Yevon tell them. If that is the case, then the fayth that dreamed/summoned Dream Zanarkand cannot come about.

Also (possibly refrence X-2) it is known that summoning was widespread pre-Sin, ie when Zanarkand was flourishing before and during the machina war, so i assume they had to have fayth back then as well