Cal looks back on the most amazing thing he's ever seen in his life, August 7, 1974, when a French street performer named Philippe Petit secretly rigged a wire between the twin towers of the World Trade Center and walked on it 1,300 feet above the ground. There are many lessons to be learned from Philippe's feat, which took place 45 years ago, and Cal has mined for them through at least a dozen viewings of the documentary Man on Wire and the feature film called The Walk. The British mogul Richard Branson also calls Man on Wire one of his favorite films, and Cal wraps up his thoughts with a short conversation he had with Branson about what we can all take away from August 7, 1974.