On Mon, Dec 14, 2009 at 10:45 PM, Peter Childs <pchi...@bcs.org> wrote: > CCbySA says you must attribute where it came from, ODbl make no such > demand. So by following ODbl you break CCbySA..... and the law is > about black and white not shades of grey.
Well, it's a bit more subtle than that, really. When you dual-license something, any reuser can follow *either* license. They have a valid ODbl licence, for example, to follow. Whether it's also CC-BY-SA doesn't matter. Just like if I license something CC-BY-SA and also put it in the public domain, you don't have to attribute your use of it to me. So, you have this a bit backwards: the problem is not that two licences is too restrictive, it's that it's too permissive. And since CC-BY-SA is being deemed too permissive by itself, adding an extra alternative licence couldn't possibly help. Steve _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
