Revisionism is the re-examination of historical events, often challenging established narratives or interpretations. It can involve new evidence, perspectives, or methodologies that lead to a different understanding of the past. This approach is common in fields like history and political science, where scholars seek to provide a more nuanced view of events. While revisionism can enhance our understanding of history, it can also be controversial. Some critics argue that it may distort facts or promote biased viewpoints. Notable examples include debates surrounding the causes of World War II or the legacy of figures like Christopher Columbus.