Two master narratives — one threat-based, one opportunity-based, but both involving seismic changes. Gilding is actually an optimist at heart. He believes that while the Great Disruption is inevitable, humanity is best in a crisis, and, once it all hits, we will rise to the occasion and produce transformational economic and social change (using tools of the Big Shift). Hagel is also an optimist. He knows the Great Disruption may be barreling down on us, but he believes that the Big Shift has also created a world where more people than ever have the tools, talents and potential to head it off. My heart is with Hagel, but my head says that you ignore Gilding at your peril.