Basically The issue is that they want Blue mages to be the most social Job in the game. you have to talk to other players to group with Them to get spells, Group with them to Do Dungeons, Raids and help you kill the mob. At level 50 you be going to tons of DF stuff or you simply will not be able to do The only thing Blue mages have you be lock out. these spells are Required for this to unlock. you don't have them you can't go in.