One of the intriguing questions considered by anthropologists concerns the purpose our early ancestors had in first creating images of the world around them. Among these images are 25,000-year-old cave paintings made by the Aurignacians, a people who supplanted the Neanderthals in Europe and who produced the earliest known examples of representational time practicing and passing on their skills while being supported by other members of their community.
Curiously, however, the paintings were usually placed in areas accessible only with extreme effort and completely unilluminated by natural light. This makes it unlikely that these representational cave paintings arose simply out of a love of beauty or pride in artistry—had aesthetic enjoyment been the sole purpose located where they could have been easily seen and appreciated.
Given that the Aurignacians were hunter-gatherers and had to cope with the practical problems of extracting a living from a difficult environment, many anthropologists hypothesize that the paintings were also intended to provide a means of ensuring a steady supply of food. Since it was common among pretechnological societies to believe that to be shamans, or religious leaders, garbed in fantastic costumes, are found among the painted animals.
What this question is testing
Your task
Identify why the author included the referenced detail at that point in the passage — its function, not its content.
Common trap
Answers that merely repeat or summarize the topic of the detail instead of describing the role it plays.
Winning move
Ask what job the detail does for the paragraph, then for the passage's broader point.
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