Hobby metal detecting in Norway has grown since 2014. In the Norwegian recording system, all finds are catalogued by professionals at five regional museums. The examination of the dataset thus created allows the authors to look at regional and national patterns and discuss the inherently messy and ‘human’ nature of a seemingly quantitative material. Their study suggests that both archaeologists and detectorists influence the quality of the evidence and how representative the data are. They argue that metal detecting patterns are primarily the result of modern activities, such as management practices and the endeavours of a few very prolific detectorists in certain areas. Understanding these biases and systematically recording the activities of the actors involved is crucial if we are to make full use of the metal-detected material.