Reality As An Illusion Humans perceive frequency of change as time. People exist by certain repetitive patterns of human condition: hunger, satiety, tired, energized, cold, warm, aroused, young, old, etc. Weave those into frequency of repetitive patterns of Earth, seasons, planetary events, day/night, and we get a web of correlating frequencies of change to form in our psyche sensation of time or so we call it. In more scientific terms spatial location of our planet and our bodies keep changing in relation to other cosmic bodies, thus change our magnetic coordinates, they fluctuate, they cause aging of our bodies, while our organs, nervous system, vestibular apparatus, the glands all together create conglomerate of subliminal sensations, the web of which manifests itself in our subjective reality as some sort of passing of change between one point of defined reality to the next, some period of energy exchange during analyzing and confirming one state of surrounding and self to the next, differing state. Essentially, change happens through physical laws, interaction of chemical elements, or matter, and that exchange of energy seems to happen in turn, one after another, instead of remaining unchanged forever or changed all at once and suddenly. If physical changes in Universe were happening all at once people might have changed from newborn to dead old person in a split second, thus eliminating that which we call life, longevity and all the changes or events in between, eliminating them to our perception. People would have no chance to influence any of their existence, because of super fast tempo. The reality( change, time) we perceive and time we have on our hands during our lives allows us to use our brain size sufficiently to be in control of at least some aspects of our existence, allows us to move our species toward higher development, allows for evolution of live creatures to happen.