This document defines plagiarism and discusses its consequences. Plagiarism is presenting another's work as one's own without crediting the source. It defines intentional plagiarism as copying others' work and unintentional plagiarism as incomplete citations. Consequences include academic penalties like failing courses and professional consequences like losing licenses. The document provides tips to avoid plagiarism such as citing sources properly, distinguishing common from unique knowledge, and rewriting in one's own words. It includes links to exercises and other plagiarism resources.