It must be approaching 50 years since my eldest son accused me of not being like other fathers. His criticism was “Other fathers answer their children’s questions, you only ask me what I think.” I would maintain that my response was not a concealment of my ignorance but a belief that people should be encouraged to do their own thinking and their own research. Nowadays that same son is a Fellow of the Society of Antiquaries and one of our leading Romano-British historians. He knows a lot about research.