When I was trying to understand the title “What is accepted as knowledge today is sometimes discarded tomorrow”, the first thing I thought about was the evolution of theories and concepts. It can be said that once the new discovery of a theory or concept is completed, the old one would most likely be discarded and no longer accepted as knowledge. However, it can also be argued that old theories or concepts are not always discarded but evolved, as they become part of the new theory. It really depends on how you define discarded. In this essay I will focus on the knowledge areas of natural science and history because there are many discarded knowledge questions in these two areas, as scientists and historians constantly discover new theories and truths about the past. In this essay on the Theory of Knowledge I will discuss the new skull discoveries in Georgia and how the old theory of human evolution could be discarded. I will also discuss the relativity of faulty theories and errors in deduction and the scientific method. Natural science belongs to the new era of knowledge. The scientific revolution of the 17th century is at the heart of everything we need to believe about science in today's society. Great scientists such as Isaac Newton and Charles Darwin along with many others discovered in just over three centuries the fundamental laws of gravity, the 92 elements of the periodic table, evolutionary theory and many other discoveries, all accepted as knowledge today. Nonetheless, scientific theories that once constituted knowledge have been discarded in more recent times. Since natural science has a history of continually changing over time, then one might ask to what extent actually… middle of paper… theories must have been adequately accurate for progress to be made. From this we can conclude that today's theories may be considered wrong, being discarded in the future, but they are much truer than they have ever been and therefore should only be considered incomplete. Bibliography: Asimov, Isaac. "The relativity of error". The relativity of error. United States: Doubleday, 1988. 35-44. The relativity of error. Double day. Network. November 24, 2013. .Lagemaat, Richard Van De. Theory of Knowledge for the IB Diploma. Cambridge: Cambridge UP, 2005. Print.Switek, Brian. “The beautiful skull spur debate over human history.” National geographic. National Geographic Society, 17 October 2013. Web. 26 November. 2013. .