Reality in the strictest sense is described as reality “as it is” or in the most absolute sense is “how something exists”. Human kind has been making models of things or a reflection of reality from the day it began to reason. In each era the assumptions on which the whole of civilization choose to see things changed. For example at the time of Galileo it was believed by people that the Sun revolved around the Earth. In fact there were giants of human kind like Socrates and Aristotle whose contributions date a long time before the period of Galileo who must have believed on the same assumption. Now as each era evolved human kind was able to control nature to a better degree and it did this by revisiting the models that it had made of nature. I say models here because they were not reality in the strictest sense. But by revisiting these models and bringing them closer to reality "as is" their ability to predict and thus control improved. Even today we have millions of models t...