Even as Silicon Valley’s millionaires multiply, many of its residents are being plunged into financial distress. This widening gulf between the “haves” and “have-nots”—and all the attendant social destabilization that comes with it—is hardly unique to Silicon Valley. However, we would argue that Silicon Valley has a unique opportunity in this regard – an opportunity to disrupt the old economic model and reengineer the physics of place to create healthier communities for everyone. Doing so will require a new kind of coordination among critical stakeholders in Silicon Valley—and especially between local philanthropists and nonprofits, who both provide a critical source of social innovation and deploy a wide range of capital types. If philanthropy’s role is to serve as society’s “risk capital” for social change, then the moment has never been riper to consider how new kinds of philanthropic and intellectual assets accumulating in Silicon Valley could revolutionize how we address the most challenging issues of our time, starting right now, right here in our own backyards.