Welcome to the "Solution Economy" We're at a critical juncture in our global economy, with the siloed ways of the past (public vs. private) quickly fading. Instead, we are witnessing a step change in how society deals with its own problems-in which government acts as just one player among many, and entrepreneurship and innovation range freely across all sectors. Deloitte's William Eggers and Paul Macmillan illustrate this new operating model in the forthcoming book, The Solution Revolution.