1 - Kind of, but as with most things, you portray it in the most negative way possible.
2 - To walk by faith is not to wander aimlessly in the dark. It is to walk by assistance. The eyes are closed, but someone has your hand and is leading you.
3 - As long as your leader is true, there is little disadvantage. There may even be an advantage, if the terrain is treacherous, and the leader experienced in its navigation.
4 - You must go into the cave, and you can only take 1 thing with you. Will you choose the flashlight, or would you rather bring the guide?
Jarrod