An assumption is a belief or statement taken for granted without proof. It serves as a starting point for reasoning or argumentation. For example, in mathematics, one might assume that a certain condition holds true to solve a problem, even if it hasn't been explicitly verified. In everyday life, assumptions can influence decisions and interactions. For instance, if someone assumes that a friend is upset without asking, it may lead to misunderstandings. Recognizing and questioning our assumptions can lead to clearer communication and better outcomes in various situations, including relationships and professional settings.