“What is accepted as knowledge today is sometimes rejected tomorrow.” What is stated above happens around us all the time. Something may be proven today, but will be proven wrong tomorrow. This is why I completely agree with this statement. But how can we accept that something is knowledge, and what makes one thing knowledge and the other just a theory? We can look at it from different aspects. We can define knowledge as a justified and true belief that can be shared through language. If something is knowledge today, it is called a paradigm. It's a kind of model. When the paradigm changes, it is called a paradigm shift. So, what is a paradigm shift? According to Thomas Kuhn, who was an American physicist, historian and philosopher of science and the first person to share this idea with the world through his book The Structure of Scientific Revolutions, "A paradigm is what the members of a scientific community, and they alone share.” In other words, it is a scientifically proven fact. Here's an example of a paradigm shift: If we look at the way humans were punished for murdering someone 100 years ago and compare it to the punishment they receive today for committing the same crime. We see that punishments today are much less violent than 100 years ago. It is a fact that punishments 100 years ago were harsher than they are today, making it a paradigm. As this is no longer the case nowadays, we can speak of a paradigm shift. There are several areas of knowledge that you can use to determine whether or not something is accepted as knowledge. I will examine some paradigm shifts using the field of natural science. If a person in a laboratory needs to examine several blood samples. This person sees that all... middle of paper ... paradigm shifts take longer to develop, so it happens over a longer period of time. White-skinned humans thought they were superior to those with white skin. black skin for thousands of years. It was normal in those days for a white person to belittle a dark-skinned person. Today, both live next to each other. Racism and discrimination are even against the law today, while slavery was still supported around 1850. It is difficult to prove that something is "true" in economics, because in economics, most of the time, words are used instead of pure facts. In natural sciences, it is the opposite. Proving something so “true” and knowledgeable is very simple in natural science. Therefore, I believe that the statement "What is accepted as knowledge today is sometimes rejected tomorrow" applies more to the natural sciences than to the human sciences such as economics..