Human beings have a thirst for knowledge, which leads to evolution and the creation of knowledge. We gain knowledge through sensory perception, reason, language and emotion. Each of these determinants can be influenced by personal background, feelings, incomplete reasoning methods, and so on. Therefore, this essay will analyze the above question through two areas of knowledge, history and religion. Knowledge learned today can be easily discarded tomorrow for various reasons, the notion of time is different and today is considered present while tomorrow is understood as future. Many real-life examples and problems have shown that knowledge acquired today can be discarded tomorrow, for example on the one hand history has changed due to historians' versions of history, and on the other hand believers in a certain religion can believe in their holy book History, the study of the past, is a great way to examine whether or not knowledge learned today can be discarded today. In the past, this happened when scientists discovered something that later proved to be different. For example, for a long time Germany was considered the main cause of the outbreak of the First World War, however historians have collected more evidence and found a different answer (Encyclopaedia Britannica, 2014), which, however, history writers are not sources always reliable and can write their own versions, which can influence the course of history. If the historian is biased towards a certain point, which we call confirmation bias, he will write it in the history books which will remain there, until the other side or the historians who analyze that topic, discover both sides of the story. To insert... half the paper... aged over time. However, people with religious beliefs may not believe it as they may think that whatever is written in their holy book is the absolute truth and will never change as it is a message from God and is one of the few symbols of God on Earth. We can also believe that knowledge evolves over time rather than being discarded. However, this essay was not fully analyzed as only two areas of knowledge were assessed: history and ethics. Works CitedBBC, 2009. BBC. [Online]Available at: http://www.bbc.co.uk/religion/religions/zoroastrian/history/persia_1.shtml[Accessed 28 February 2014].Encyclopaedia Britannica, 2014. Encyclopaedia Britannica. [Online]Available at: http://www.britannica.com/EBchecked/topic/648813/World-War-II[Accessed 2 March 2014].Lagemaat, R. vd, 2005. Theory of knowledge. sl:sn.