Book excerpt: Debitage, the by-product flakes and chips from stone tool production, is the most abundant artifact type found on prehistoric sites. Archaeologists now recognise its potential in providing information about the kinds of tools produced, the characteristics of the technology that produced them, human mobility patterns and even site function, applying scientific analyses to its study. This volume brings together some of the most recent research on debitage analysis and intepretation, including replication experiments, and offers methodologies for interpreting variability in assemblages at the micro and macro level.