The negative marking system in the UPSC Preliminary exam has significant implications for aspirants. It discourages random guessing, prompting candidates to employ a more strategic approach to answering questions. This system emphasizes the need for thorough preparation and understanding of topics, as making uninformed guesses can lead to a decrease in overall scores. It also influences time management during the exam, pushing candidates to allocate their time wisely, ensuring they only answer questions they are reasonably confident about. Ultimately, this system aims to test both knowledge and judgment.