In "The Ghost Brigades," John Scalzi discusses a practical philosophy known as Occam's razor, particularly in the context of combat. This principle suggests that the most straightforward approach to defeating an opponent is often the most effective. Martial tactics do not need to be overly complex; simple techniques can yield the best results in confrontational situations. Scalzi implies that in warfare, as in many areas of life, the obvious solution is often the right one. By focusing on simplicity and clarity in strategy, combatants can avoid unnecessary complications that may lead to failure, emphasizing the value of direct action in achieving victory.