1. The document discusses how sharing and openness can drive innovation through things like Creative Commons, which provides legal and technical tools to enable controlled levels of sharing.
2. It argues that sharing at different layers, like the knowledge layer, can lead to explosive innovation if enough sharing is obtained. Creative Commons aims to provide infrastructure for sharing to build a sustainable society respecting the law.
3. Sharing takes different forms like sharing content, data, knowledge and software, and can be a business strategy, customer demand, or way to more efficiently use resources through mechanisms like the Web and TCP/IP protocols.