I'm not trying to have a debate. It's simply my opinion. And common sense is GENERALLY universal. It is common sense that the elements such as violence, sex, and language are in certain games. Although, it is up to the parent to decide whether their child can handle these elements. So yes, that part is common sense. Common sense is extracted from years of research, enough to not even have to reference the research since it is so commonly known. There is common sense in every topic, but not everyone is familiar with certain topics, but I am familiar with psychology, through reading many articles, where, in the comments section, are trolls just like you who are willing to point out any flaws in some random person's opinion, and most of the flaws you point out are only based off your insecurities. You're just trying to make yourself sound intelligent, where, in reality, you are just an arrogant cretin.