A detailed reference makes specialist knowledge easier to consult, including information a general historian would struggle to keep in memory. Fleet describes his own range as covering naval and land history, tanks, aircraft, industrial heritage, and dynasties at an introductory level. That breadth does not amount to detailed expertise in each field. He directs detailed questions to people who concentrate on the relevant subject.
Notable Point · 34:22-35:09
When a general history question needs a specialist
Broad introductory knowledge has limits, and detailed questions benefit from a specialist in the relevant subject.