Japanese scientists created replicas of Stone Age tools to understand how they were used in the Early Upper Paleolithic era. By conducting hands-on experiments, they were able to identify new criteria for identifying the likely functions of ancient tools. The tools used for woodworking purposes evolved from simple to sophisticated over time, with evidence suggesting that humans were working with wood and honing techniques much earlier than previously believed. The study conducted by Tokyo Metropolitan University used different types of replica tools to test various tasks, such as tree-felling, wood-adzing, and bone-adzing, and concluded that examining both macroscopic fractures and microscopic traces is essential for determining how Stone Age tools were used.
https://arstechnica.com/science/2024/03/these-scientists-built-their-own-stone-age-tools-to-figure-out-how-they-were-used/