Though you may have a considerable amount of information about a thing, enough to say with confidence that it is what you purport it to be, you may find another fact or figure which curtails your trajectory in the direction of absolute knowledge about the thing and introduces an element of doubt into your otherwise tidy equation of this balanced with that. There is always more information than you can possibly collect in a single lifetime on any subject; thus metaphor is handy to gather what is understood and distill it into a neat little package. However, metaphor requires some sophistication of thought and a fair degree of play in order to be effective as a tool for arriving at a point of knowingness about something that could be said to even approach complete. Besides that, it invites subjective interpretation and thus is relatively inexact for reaching what could be called objective consensus. Language too has similar limitations, being basically metaphorical by nature. Mathematics can be trusted by those who understand its particular emergent structure, yet it is bound by the limits of understanding of those who put together fundamental notations in ignorance of the true form of the idea they seek to express. And so, you see, there are inherent blockages to full and complete understanding of the nature of that which you call Universe, or Multiverse, which can be expressed between individual seekers of truth in the language of exposition, poetry, or mathematics. Music, art and other modes of expression likewise have inherent limitations when it comes to absolute knowingness. The experience of certainty is not something that can be expressed in such a way that its essence can be grasped by reading about it. Although the paths leading to such an experience are utterly subjective, even though they can be shared by many and diverse, the experience itself is universally acknowledged to be at the same time true and indescribable, unitary and unknowable without access to a greater Self than is commonly acknowledged, absolute and yet infinite. No matter what the subject, the experience of certainty is thus.