Acronyms can assist in memorizing important facts for UPSC by providing a mnemonic device that simplifies complex information. By creating catchy acronyms or phrases, aspirants can streamline their study processes and enhance retention. For instance, using an acronym to remember key points in polity or geography can aid in quick recollection during exams. Additionally, these memory aids can also help in recalling lengthy lists or sequences efficiently, thus speeding up the revision process and making studying more enjoyable and manageable.