function. The precision of functional identifications may range considerably, from "scraping soft material" to "scraping fresh hide for 10 minutes" with a corresponding drop in accuracy as precision increases. Macrowear studies relying on 3D modelling are also increasingly common.

Ethnographic research is another way to figure out the use of stone tools by observing the modern communities which still have stone tool traditions. A research of the Wola society in Papua New Guinea shows that stone tools have a wide range of uses, but a short