The doctors and nurses who have risked their lives to treat patients have defied these explanations and proved that altruism can be genuine. The idea of selfish self-interest needs revision. John Nash gave the idea that everybody does what’s best for him and the group. Referring to humans as a group, Dawkins think that Selfish Gene has no inherent morals and only has survival instincts. Morality is then just an instrument to achieve survival of the fittest.