Not sure about genius, but native people have very good knowledge of their environments. Some of the New World civilizations such as the Maya, Aztecs, and Inca have quite impressive achievements, such as building pyramids and other structures, and they also may have deep knowledge of astronomy. When people have to live a hunter/gatherer lifestyle, they are unlikely to have the time to invent things that are unrelated to their survival. If one has to spend most of every day finding food just to survive, then they won't have time to learn about the stars and the moon. OTOH, people who practice agriculture must be ale to figure out what time of the year one must plant seeds, and knowing about the solar and lunar cycles is often the key to successful agriculture and therefore survival.