The Scale of Intelligence: The Place of Humankind in the Arc of Development

Abstract

For a long time, humanity regarded itself as the ultimate stage of reason, the highest form of intelligence in existence. Yet science continues to reveal growing evidence that intelligence is not an exclusively human attribute. This study explores the idea that intelligence is not a stepwise hierarchy but a continuous spectrum extending from simple organisms and nervous systems to the emergence of artificial superintelligence. The paper approaches the scalability of intelligence from both biological and neurocognitive perspectives, while also examining the development of machine learning and artificial systems that create new levels of cognition. Furthermore, it draws parallels between the historical relationship of humans and animals, and the potential future relationship between humans and artificial intelligence. Ultimately, the study does not merely ask how far intelligence can be scaled, but rather what place humanity occupies within this expanding continuum of mind.