Part 6/7:
In terms of the functional book graph, I would place Clausewitz's "On War" in the category of "Gems of Insights," as it provides deep theoretical knowledge on the nature of warfare, but can be challenging to read due to its complexity and contradictions. In contrast, I would categorize "The Art of War" as a "Hammer Book," as it offers specific and practical advice that can be applied to a wide range of conflict situations, but requires careful reflection and contemplation to fully internalize its lessons.