Humans attempted to understand the world by coming up with theories, examinations, and investigations to expand their knowledge and discover new things, so that they could better understand what was happening . around them. People are always seeking new knowledge by experimenting with new theories and revising some old ones, in order to reshape, evaluate and accept the knowledge they possess. However, some theories turn out to be false or partially true and have been discarded as knowledge. A theory cannot be entirely considered false, but it is possible that another theory will arise and explore the subject outside of the boundaries set by scientists. The questions raised regarding knowledge are: Is knowledge discarded or is it somehow restructured into new paradigms? Do all fields of knowledge treat knowledge the same way? I will address the following knowledge questions in two areas of knowledge: natural science and art. Part of human knowledge comes from complex theories established in the natural sciences. As scientists, we lay the foundation for an experiment and let other people develop theories to explore beyond the known. Then we look at the theories and choose the one that best describes the concept and tells us the most facts. When I was taking my first year of IB physics, one of the subjects was atomic and nuclear physics. The topic was mainly about nuclear structure, radioactive decay, nuclear reactions, etc., but there was something in this topic that caught my attention, the model of the atom. Since the 5th century, understanding of the atom has evolved. The Greeks invented the idea of ​​the atom and believed it was not physically divisible. Then......middle of article......which is hard to refute without contrasting evidence that can prove the math wrong. In conclusion, knowledge is processed in different ways in each field, and depending on the way in which it is processed, we decide whether it should be discarded or not. Knowledge is rejected when we reach a point that causes it to reject itself, which happens when theories overlap and one of the results is more structured and therefore exceeds the limits we have set to acquire knowledge. All science. Siyavula, nd Web. December 18, 2013.Lagemaat, Richard Van De. Theory of knowledge for the IB diploma. Cambridge: Cambridge UP, 2005. Print. Pajares, Frank. “The structure of scientific revolutions”. Wikipedia. WikimediaFoundation, February 19, 2014. Web. February 24. 2014.