Hoooonk! The long, solidary blast of the car horn snaps you back into reality. Eyes darting back and forth, you scan the room one final time, as your buddy shouts outside, "Hurry up!" With sweaty palms, still frozen in that final moment of indecisiveness, you grab your backpack and exhale all doubt. You have everything you need for your hiking trip. You thought! At some point, we have faced the daunting task of determining if we packed "everything" we need for our venture.