"The crystalization is a safety measure, what holds back the Calamity. If the cycle is not reset, kill Garland but not solve the Calamity, then we've seen what would happen. The crystal breaks, and the world is left behind, empty. The few survivors have a whole world of tech to scavenge but still cant get home."

"If Garland is defeated but not Palitutu, Kalki said she can restore his memories. It's got to be both Garland and the Calamity." Jack still doesn't understand this place, he's not satisfied with Cloud's answer, but he'll move on. He heads towards the platform Jade has pointed out.