A Given Reality

A certain circumstance creates a given reality by establishing a frame of reference around that circumstance that defines what it is - that frame of reference gives a perspective much the same as looking though a windowpane, that perspective in turn gives us our perception of that circumstance which is a type of reality, a given reality that will exists as a long as that particular circumstance exists. The fundamental reality of the universe is made of all these given realities, perhaps even realities that never existed, but could have been possible, perhaps similar to a level four multiverse in cosmology. 

If we are to understand the universe and reality then we must mathematically understand the laws of the universe and the laws of reality.