I don't think big and important are synonymous. One of the most important problems in many communities is the vanishing of so called 'third places'. The places

I don't think big and important are synonymous. One of the most important problems in many communities is the vanishing of so called 'third places'. The places people go that isn't their home or work. Many communities lack them them nowadays. This is something everyone can work on, you don't need to be a climate scientist or solve global peace. If you're a programmer as many people here are you can work on buildings things for your community, your neighborhood, a civic organisation, and so on. The alternative to building some soulless ad platform isn't some world changing thing, it's simply to build small scale things with good incentives for people around you. That is important, and if enough people do it, collectively it will have a big impact.