If you and I were hiking along a mountain trail and you were in front of me, and I suddenly yelled out, “Look out!” what would you do? I think you would likely stop dead in your tracks and look around. Then you might see that you were on the edge of a precipice, and that with one more step in the direction you were going, you would have fallen over the cliff to your destruction. So you would probably back away, look around, study the terrain, maybe look at a topographical map, and find a safe path and take that.