@duggage It seems Investigation can be used instead of Perception for detecting secret doors(ex Dungeon Delver). Yes? Traps? Typo? Yes, it can be. Depends on situation – perception can find physical signs, investigation allows deduction — Mike Mearls (@mikemearls) September 19, 2014 @duggage Examples – Investigation might reveal trap door hidden beneath a rug by … Continue reading It seems Investigation can be used instead of Perception for detecting secret doors. Yes?