The 1789 smallpox epidemic in Sydney, Australia, has long been a contentious topic in the country's colonial history. While some argue that the disease was introduced by Makassar traders, new research suggests that it originated from the British First Fleet. This study, published in Nature Human Behaviour, used modeling techniques to trace the spread of smallpox across Indigenous Australian societies, revealing a devastating impact on the local population. The findings highlight the catastrophic consequences of infectious diseases on Indigenous communities, particularly when introduced by Europeans. The epidemic, which could have killed up to 220,000 Aboriginal people, had long-lasting effects on families, knowledge systems, and cultural practices. This article delves into the historical context, the modeling techniques used, and the broader implications of the study, offering a critical perspective on Australia's colonial past and the ongoing process of healing and truth-telling.