In psychology, the six principles of scientific thinking are extraordinary assertion, falsifiability, Occam's razor, replicability, rival dominant hypothesis, and correlation vs. causality. We know that gaining new knowledge always helps the growth of our mind, but sometimes a statement may contradict what we already knew, so we need more convincing evidence to prove this statement before we accept it. It is natural for people to doubt something extraordinary, and a very basic thinking skill known as extraordinary claims requires extraordinary evidence. Specifically, it can be presented as if I didn't come to class today and told my instructor that I ate terrible fish last night and had diarrhea, then she might believe me. If I told her that it was because an aerolite hit my house, but no media reported this news, then she would not believe my statement because it is of an extraordinary nature and there is no extraordinary evidence. Second, if a claim is supported by convincing evidence, it should also be falsifiable. At least in theory there is an observation ...