Peter F. Drucker, an American author, once said, “Knowledge must be constantly improved, tested, and increased, or it will fade away.” Knowledge primarily consists of information, skills, and opinions obtained through life opportunities, encounters with individuals, education, and life lessons. In today's modern world, we pursue knowledge because it is useful for obtaining information. For many years, humans have sought to acquire advanced levels of knowledge and information. In my opinion, disagreement is the opposite of logic; contradicts or opposes evidence that has otherwise been proven true. Disagreements act as obstacles that hinder the pursuit of knowledge. The idea of ​​disagreement can be linked to two important ways of knowing: perception and reasoning. There are three main forms of disagreement: religious, individual, and idealistic disagreement. statements about the world. However, when disagreements arise, they provide individuals with the opportunity to question their beliefs and assumptions, leading to a deeper understanding of the topic. Indeed, it is through the process of overcoming disagreements that scientific theories are refined and improved, ultimately leading to a more accurate understanding of the natural world. Therefore it can be concluded that disagreements are not only useful but necessary in the pursuit of knowledge.