Expert opinions, especially in the field of medicine, are now used commercially to further improve the reliability of the buyer's product. A notable example is the involvement of doctors in the sale of cigarettes in the 1930s and 1950s. Like Camel's 1946 advertisement, with its "More Doctors Smoke Camels" logo, competing tobacco companies used the promising image of doctors to reduce the harmfulness of cigarettes. This suggests that advertising agencies believe that experts have an impact on customers despite the harmful effects of the product. From this example, we can ask some questions regarding the question: "How important are expert opinions in the search for knowledge?" First of all, who are the experts? Is it possible for anyone to be an expert given that they know facts in a specific area? If so, would that mean anyone can be a doctor as long as they know all the terminology? In my opinion, the fine line that determines an expert is whether they have both the degree of specific training expertise and field experience applying the materials learned. So it would make sense that those who have completed both the training and the degree would be experts in medicine. I then thought about how important their opinions were to us. Since experts are individuals themselves, their opinions on a specific issue would likely be subjective and subject to bias. Thinking about these questions, I came to ask a question about knowledge: to what extent can we trust the opinions of experts in the search for knowledge? There are experts in the same field who have PhD from different universities like UBC, Harvard and more. . So what feature do we use to determine who is a more informed expert? I...... middle of paper ......l in the sense that they make similar rational decisions as we do. As shown in the case study regarding whether or not to send the patient for hip surgery or to test the two medications he had not tried, the doctors chose to simply send him to have hip surgery due to the complications they would face. when choosing which medication to try. This study shows that we, even experts who appear to make rational decisions, may not be as rational as we think. The Knowledge Question: “To what extent do we trust the opinions of experts in the search for knowledge?” » relevant to our daily lives because we rely on them for our decision-making and questions regarding life and death. It is important that we are aware of both arguments on the same issue so that we are aware of both opinions and use both our knowledge and our beliefs to form knowledge..