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Nagoya University Reveals Ancient Toolmakers’ Rock Selection Wisdom

In this post:

  • Nagoya University Museum’s research reveals that Paleolithic humans in the Middle East selectively used obsidian and flint for toolmaking based on their properties.
  • Early humans preferred translucent, smooth flint for easier shaping, but initially chose medium-grained flint for its durability in larger tools.
  • The study highlights the advanced cognitive abilities of ancient humans, demonstrating strategic planning and material understanding akin to modern humans.

Recent research conducted by Nagoya University Museum has unveiled groundbreaking insights into the toolmaking practices of Paleolithic humans in the Middle East, dating from 70,000 to 30,000 years ago. The study, focusing on the discernment and selection of rocks for tool creation, highlights the advanced cognitive abilities of these ancient humans.

The researchers’ findings reveal a strategic choice of materials, primarily obsidian and flint, for toolmaking during the Middle and Upper Paleolithic periods. Flint, favored for its transparency and smoothness, was particularly sought after due to its ease of being fractured and shaped into sharp edges. This preference demonstrates a deep understanding of material properties and an ability to select the most suitable rocks for specific toolmaking purposes.

Evolving preferences and techniques

A significant shift in material preference was observed over the millennia. Initially, Paleolithic toolmakers favored medium-grained flint for larger tools, valuing its durability despite its challenging workability. As the researchers suggest, this choice stemmed from the lack of internal fractures in medium-grained flint, making it more suitable for robust toolmaking. However, as time progressed, a transition towards fine-grained flint occurred, especially for crafting smaller tools. This shift can be attributed to its lesser force requirement for fracturing despite its prevalence of internal fractures due to geological activities.

Cognitive abilities of early humans

This study sheds light on the cognitive processes of our Paleolithic ancestors. Their decision-making in tool material selection reveals a complex understanding of various factors, including durability, workability, and the suitability of the material for different types of tools. This behavior indicates strategic planning and foresight akin to modern human thought processes. It underscores the sophistication in the cognitive abilities of early humans, who demonstrated remarkable ingenuity and practical intelligence in their toolmaking practices despite the absence of advanced technology.

A glimpse into the past

Nagoya University’s research provides a compelling glimpse into the lives and minds of our ancestors. It challenges the often-underestimated capabilities of ancient humans and underscores the continuity and evolution of human intelligence over thousands of years. This study not only enriches our understanding of Paleolithic societies but also offers a profound reflection on the human capacity for innovation and adaptation in the face of environmental and material constraints.

In essence, the ancient toolmakers of the Middle East, with their careful selection and utilization of rock materials, have left a legacy that continues to inform and inspire our understanding of human history and evolution.

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