Although I have learned numerous things during this semester in psychology, I believe that in 5 years what will still be in my mind is the six principles of scientific thinking: Ruling out rival hypotheses, correlation vs. causation, falsifiability, Occam's Razor, extraordinary claims, and replicability. These are principles that I have found can be used in many situations and all throughout life. I will most remember correlation vs. causation, though, because that was one principle that took me a while to understand. When I did understand it, however, it made so much sense to me and can really benefit me and everyone else.