Stone toolmaking difficulty and the evolution of hominin technological skills

Area of Science:

• Archaeology
• Paleolithic studies
• Lithic technology analysis

Background:

• Stone tools showcase hominin cognitive and motor skills.
• Understanding skill requirements is crucial for analyzing lithic technologies across the Palaeolithic.
• Comparing skill sets across different stone tool types remains challenging.

Purpose of the Study:

• To quantify and compare knapping skill metrics across four distinct lithic technologies: discoids, handaxes, Levallois, and prismatic blades.
• To establish commensurable metrics for evaluating dexterity, coordination, and care in stone tool production.

Main Methods:

• Analysis of video footage and lithic materials from replicative knapping experiments.
• Quantification of deliberation (strike time), precision (platform area), intricacy (flake size relative to core size), and success (relative blank length).

Main Results:

• Discoidal knapping demonstrated the lowest skill requirements among the studied technologies.
• Levallois knapping involved complex reduction but less motor control than handaxes and prismatic blades.
• Prismatic blade knapping was identified as the most skill-intensive, yielding standardized, elongated products.

Conclusions:

• Prismatic blade production represents a highly specialized and skill-intensive lithic technology.
• The study provides a quantitative framework for comparing Palaeolithic knapping skills.
• Findings contribute to understanding the evolution of hominin cognitive and motor capabilities.