Abstract

This chapter focuses on one of the common fallacies in Western philosophy, “unwarranted assumption”. Unwarranted assumptions are claims or beliefs that possess little to no supporting evidence, things we might take for granted as true, or just completely false ideas we inherited without reflection. When we reason using implicit assumptions or further propositions whose truth is uncertain or implausible, we commit the fallacy of unwarranted assumption and the truth of our conclusions is grossly affected. Prejudices and stereotypes are some common ways in which we make unwarranted assumptions. The key to preventing this fallacy is evidence: warranted assumptions have evidence and ways of demonstrating their truth with certainty. It is best to not hold something as true or applicable without proof that it is true and applicable. This implies that we need to assess our ways of thinking and belief formation critically.