I agree to some degree. One person cannot tell if another individual is affected by games. However, I believe that an individual can tell if something (such as a game, for example) is affecting them. They would argue that experts who have studied the subject are qualified. However, I believe that experts are like all other power holders - they will do whatever it takes to stay in power - even if they have to lie to you (when telling the results of tests) to shape your opinion to match their own, making them always right (which, in turn, increases their power). By the way, why does the government set age restrictions on movies, games, and other products? It implies that they know an age at which people become aware of the effects of these influences on themselves. If they are so knowledgeable, why does the government continue to conduct tests to learn more about these things? Perhaps they don't gave a good grasp of the concept yet.... I know this is slightly off topic, but it does have some relevance to the question.