The Primary Universe is fraught with great peril. War, plague, famine and natural disasters are common :: The Fourth Dimension of Time is a stable construct, though it is not impenetrable :: Incidents when the fabric of the fourth dimension becomes corrupted are incredibly rare... The linear paradigm of Time as a single "line" is a theory constantly in need of correction :: Potential energy may build in the local collective unconscious, leading to wave interference from a Parallel Universe... If a Tangent Universe occurs, it will be highly unstable, sustaining itself for no longer than several weeks :: Eventually it will collapse inward upon itself, forming a Black Hole within the Primary Universe capable of destroying all existence...