Interbreeding among different human species has significant implications for our understanding of evolution. It challenges traditional notions of distinct species boundaries by blurring the lines between them. The presence of Neanderthal DNA in modern Eurasian populations and Denisovan DNA in Oceania suggests that gene flow occurred between different hominin groups. This genetic mixing not only enriched the diversity within our own genome but also highlights the interconnectedness of various human lineages throughout history. It underscores the complexity of evolutionary processes and emphasizes that hybridization played a crucial role in shaping modern humans.