What is reality? Is this what we all believe? That everything exists independently of us or that everything exists because we make it exist in our mind. An ancient philosopher, René Descartes, considered the father of modern philosophy, proposed that human beings were made up of two different compounds, the body and the mind. He saw the body as a complex machine but was sure that the mind was completely different. He tried an experiment. He tried to imagine that he had no physical body and was floating like a ghost, then he did another experiment, he tried to imagine that he had no mind, but this was impossible because if you have no mind how can you imagine anything at all. He summed up his thoughts in the phrase “I think. So I am." Our body is like the hardware of a computer and our mind is the software. How do we know that what is there really exists? Take a chair, for example, how do you know if it chair is still there if you are not there to see it? As far as we know the chair can get up, go out the window and visit any place in the world or even v...