In mathematics and physics it is quite common to test a theory, model or equation by examining how they behave at the limits of the phenomena in consideration. This where the use and results of a paradox arise. Typically the paradox is based on the sound logic or reasoning of the premise under consideration but leads to a contradiction that seems impossible, illogical or a violation in the principle of the premise. A simple example that is usually encountered is the following; 'If God is omnipotent, can God create an object so heavy that He can not lift it'. Another such paradox exists when we consider traveling backward in time. If traveling backward in time is possible a person could travel back to a time before they were born and alter history in such a way that they will never be born (such as killing their parents). This effects the way that science considers the logic of a situation. This book gives an overview of the paradox.