This Podcast describes the Ishikawa diagram, also known as the fishbone diagram, and its application in the construction industry for analysing the causes of problems such as delays and quality defects. The diagram structures the analysis according to categories such as material, personnel, machines, methods, environment and management. It explains how the diagram is used in different project phases and what advantages it offers. Finally, challenges in the application and the limitations of the diagram are addressed. The article comes from BuiltSmart Hub, a platform for innovative technologies in the construction industry.