“What is accepted as knowledge today is sometimes discarded tomorrow.” What has been stated above happens all around us all the time. Something could be proven today, but disproven tomorrow. Therefore 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 consider it from different aspects. We can define knowledge as a justified, true belief that can be shared through language. If something is knowledge today it is known as a paradigm. It's a kind of model. When the paradigm changes it is called paradigm shift. So what is a paradigm shift? According to Thomas Kuhn, 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, they share." So, 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 killing someone 100 years ago and compare it to the punishment they receive today for committing the same crime. We see that punishment in the present is much less violent than it was 100 years ago. It is a fact that punishments 100 years ago were harsher than now, which makes it a paradigm. Since this is no longer the case nowadays, we can talk about a paradigm shift. There are several areas of knowledge that you can use to determine whether something is accepted as knowledge or not. I will look at some paradigm shifts using the area of ​​natural sciences. If a person in a laboratory will examine several blood samples. This person sees that all… middle of paper… paradigm shifts take longer to develop, so they happen over a longer period of time. Humans with white skin thought they were superior to those with white skin. black skin for thousands of years. In those days it was normal for a white person to put a dark-skinned person down. Nowadays they 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, since in Economics mostly words are used instead of pure facts. In Natural Sciences it is the opposite. Proving something as “true” and as knowledge is very simple in the natural sciences. Therefore I believe that the statement “What is accepted as knowledge today is sometimes discarded tomorrow” applies more to the natural sciences than to human sciences such as economics..