We’ll also need practical arrangements to address fundamental questions around data ownership. We need to enable groups to share data without giving up their ownership and ongoing control of the data they share. Just as landowners sometimes enter into easements or other arrangements that allow others onto their property without losing their ownership rights, we’ll need to create new approaches to manage access to data. These must enable groups to choose collaboratively the terms on which they want to share data, including how the data can be used. In addressing all these issues, the open-data
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