Our intelligence, logic, and natural important of this world is in our organs. Loosing one of the five sense organ means loosing our functionality. Illusion of deformation is horrific consequences of doubting knowledge behind our understanding. It is true, our sensors are stronger forward and weak backwards however, our front is attack often then any part of our body. We do not have vision behind us to enhance its functionality neither do we enhance our front to weaken our back. Whichever way you view it, the end result is, let nature take its cause.