How do historians deal with gaps in their knowledge base? How much reading is enough? What about people who work in multidisciplinary areas (economics and history, sociology and history, etc.

• 碰到所知不足的情况时,历史学家该如何应对?要读多少东西才算够?那些研究跨学科领域的人呢?(经济学与历史、社会学与历史,等等)