Despite these similarities, the relationship with development is one of the most contested areas of human security . "Freedom from fear" advocates, such as Andrew Mack, argue that human security should focus on the achievable goals of decreasing individual vulnerability to violent conflict, rather than broadly defined goals of economic and social development. Others, such as Tadjbakhsh and Chenoy, argue that human development and human security are inextricably linked since progress in one enhances the chances of progress in another while failure in one increases risk of failure of another.