I disagree, having just skimmed through this whole chapter twice now for other posts in this thread. At least half of this chapter is not directly related to combat. Sure, Visibility Outdoors is needed for combat, but it's also needed for exploration and to preface a social encounter as well. Almost every other section (~25) falls into being needed for a non-combat pillar except for; Attack Rolls, Combat, Combining Game Effects, Improvising Damage, Adjudicating AoEs, Handling Mobs, Adj Reaction Timing, & Siege Equipment.