Early in the book, Slakey, hanging on the side of the mountain, is faced with a decision: trust his safety rope or untie the safety knot and depend on the untested rappel line. How much of life is "untested versus proven," as Slakey says? Is it easy to step out where we cannot see clearly? How can we move ahead in our lives if we live holding on to a safety rope? In your answer, please refer to the book and your own life for examples.