The document discusses how gaming can change the world by engaging over 500 million gamers worldwide. It outlines how games provide goals, rules, feedback and voluntary participation which focus and empower players, unlike many real world jobs that promote employees to levels of incompetence. Common elements of games establish purpose and creativity while providing motivation through feedback on progress towards goals. Well-designed games can provide "hard fun" through positive stress or eustress, leading to feelings of accomplishment rather than depression.