We're only as intelligent as the models we learn. Where we don't have models we tend to learn by simple correlation. Discoveries are rare, even researchers only

We're only as intelligent as the models we learn. Where we don't have models we tend to learn by simple correlation. Discoveries are rare, even researchers only grind at that 0.01% beyond the known modelling space. A human in a primitive society, even with the same IQ with a modern man, would be much less intelligent about solving a variety of tasks because they lack the mental "furniture". Most of our intelligence does not come from the brain, it comes from the culture, which is an evolutionary process.