 A grand challenge that galvanizes a whole community around a specific issue is so much more impactful than, you know, endless books about solving a crisis. Take Haiti for instance. We're thinking the 20, 30 years ahead of how does Haiti become a self-sufficient country that becomes an engine in the community, whereas most people are saying I need a roof over my head. So we can't push them into something too advanced, but we also can't just solve the basic problems. Every disaster, everyone's like well let's just build four walls and a roof and they'll be fine and we can walk away. And what you're doing is you're building future ghettos, which then become areas of crime, neglect, and then when a disaster happens again, everyone is affected. So we have to figure out the mechanism that empowers people to look beyond their current problem.