Among all the things we have learned in class for the past two weeks, the most important concept that interested me most is the relationship of correlation and causation. According to the text book and what the professor said, the correlation-causation fallacy is that people often neglect the real causation of two factors but directly build a causal connection between the two factors even though they are just related to each other. Although people always try their best to be rational, they often fall into "traps" unconsciously. Just like the correlation vs. causation fallacy, there are some other cognitive traps that may confuse people. For example, the public usually believe that a good theory can not been disproved. However, if that is true, this theory will be able to explain everything, which also means it can explain nothing. Otherwise, some one will totally rely on the only result that he or she get from their first try and forget to repeat the activities to examine their results. All these "traps" are misleading and hard to discover when we are careless. Thus, many firms often use these strategies to earn a better influence on advertisements. By both changing the way they describe the products or exaggerate the initial functions, they can make their products more attractive and valuable. Sometimes, the consumers may be mislead by the firms and purchase the products, which are not as good as the consumers expected. In order to avoid these situations, we should always keep claim and rational by using the critical thinking and try our best to get away from these traps not only in the laboratory, but also in everyday life.