[After explaining that to Jade, you added, "Because each Authority is unique since they are made up of a specific law fragment, it's impossible to use Equivalent Exchange to exchange for Authorities we encountered."]
["It's only possible to exchange for it if the Authority is ownerless. But if it isn't, such as it already being used as nutrients by the Ether Fruit Tree, we can't exchange for the Authorities we've already used to fertilize the Ether Fruit Tree."]
[You've recalled that the Initial Aether rank World Serpent possessed the Life Authority.]
[Since it's corpse possessed residual law fragments of the Life Authority, the World Serpent's Life Authority was already used to nourish the Ether Fruit Tree.]
[Unless you chopped down the Ether Fruit Tree and released the World Serpent's Life Authority back to the universe, it was impossible to exchange for the World Serpent's Life Authority using Equivalent Exchange.]
