Note: This is a guest post from Douglas Cartwright of Living Words Recently, I was watching a television show about Dean Potter, an American ‘slack line walker’ who strings one-inch thick nylon ropes between high mountainous places and walks across them. Whilst that’s impressive, you might think “I’ve seen tightrope walkers before.” But Dean is different. He does it without a balancing pole, or a safety harness, and the line is, literally, slack unlike the traditional high-wire walker. So it mov