to start with , sabon floated the thought-i ca n't even credit it with the term `` idea '' -that the gray caps were the degenerate descendents of a local tribe similar to the dogghe or the nimblytod { without asking either tribe how they felt about being lumped in with the gray caps , and without consulting their extensive oral histories } , but a tribe that had been colonized and then subjugated by several variations of fungus found in both above- and belowground ambergris .