That isnt really explained though. The storyline isnt really emphasized nor does it seem like any real work was put into it at all (not a diss, honest, because I dont think games like this really need a story, its fun because of what you do, not why you do it). Until you said soemthing, I always just thought of it as an affinity toward a certain element, or being more in tune with all of them, in which case I thought of a master that was in tune with all, or one who had no straight affinity. However, under the pretense you mentioned, I suppose the quantum mark idea doesnt really make sense