A skeptic is someone who questions or doubts accepted beliefs or claims. This attitude is often applied to various fields, including science, philosophy, and religion. Skepticism encourages critical thinking and the examination of evidence before accepting something as true. Doubt is a natural part of the human experience, prompting individuals to seek more information or clarification. It can lead to deeper understanding and informed decision-making. In philosophy, skepticism challenges the certainty of knowledge, while in science, it drives inquiry and experimentation to validate theories and hypotheses.