There is no need for an arbiter. However, statistically, the majority of conspiracy theories are going to be invalid. As they grow in scale the likelihood of

There is no need for an arbiter. However, statistically, the majority of conspiracy theories are going to be invalid. As they grow in scale the likelihood of being real also goes down. https://www.bbc.com/news/science-environment-35411684 https://www.bbc.com/news/science-environment-35411684 If there is strong evidence for such a conspiracy, then it's gone beyond theory (colloquially) at that point. By that definition the term is like "alternative medicine". If it worked, it'd be called medicine. Additionally, it's worth pointing out that the existence of a previous conspiracy being true is not actually evidence that later conspiracies are also true. MK Ultra and co are the exception rather than the norm.