How often do you have to hear something before you decide it must be true? As I recall from my High School English class, you need to back up any claim with at least three credible sources. Ideally, these three sources should have different pedigrees for their research. Their conclusions should derive from different sources. In other words, they should not all just be repeating the same rumor. In today’s world, that means three re-tweets do not make a truth. Neither does three Facebook shares or re-posts.