> Usually when someone attaches an open source license to their work, they’re licensing their copyright in that work to others. U.S. Federal government employee

> Usually when someone attaches an open source license to their work, they’re licensing their copyright in that work to others. U.S. Federal government employees generally don’t have copyright under U.S. and some international law for work they create as part of their jobs. In those places, we base our open source license in contract—rather than copyright—law. > ... > When You copy, contribute to, or use this Work, You are agreeing to the terms and conditions in this Agreement and the License. I do not see how this is enforceable, or that it even makes sense, any more than it would make sense for me to take, say, a NASA photo and slap my own terms on it. If it's in the public domain, there's no ownership and no 'or else' to back a contract setting licensing terms. The alternative is that I'm misunderstanding this license, of course. Where am I going wrong?