The origins of human intelligence can be traced back to primitive primates that demonstrated early signs of cognitive abilities such as tool use and problem-solving. Research indicates that these skills were essential for survival in complex environments. The social brain theory posits that the need to navigate social relationships and hierarchies drove the evolution of our cognitive abilities. As social groups expanded, so did the challenges, necessitating an increase in brain size and complexity. Additionally, cultural learning became a pivotal factor, allowing knowledge to be shared across generations. Studies suggest that while brain size is important, the organization and connectivity of neurons are equally vital for advanced functions like abstract thinking and language. Ultimately, human intelligence is the result of a complex interaction between socialization, culture, and biological evolution.