Le 3 Janvier 2006 10:45, Mathieu Bouchard a écrit :
Hmm, possible, but then why don't people do it? Why do people use the MITX11 license or the SIBSD license instead of just public domain?
Because with licences you can impose restrictions, even if it's only about the redistribution of the copyright notice. And also because licenses are more explicit than the "state of no copyright".
On Mon, 2 Jan 2006, Marc Lavallée wrote:
Although copyright law generally does not provide any statutory means to "abandon" copyright so that a work can enter the public domain, this does not mean that it is impossible or even difficult, only that the law is somewhat unclear."
What's the advantage of using unclear laws instead of clear free licenses such as MITX11 and SIBSD ? I mention those two as examples because they are closest to public domain and it seems that their purpose is to simulate public domain but in a legally clearer way. (GPL/LGPL has additional goals that are less close to public domain).
Laws and licenses are different things. Licenses are governed by international and national copyrights laws. That's why it's difficult to write a license with an international scope, translate it, and eventually test it in court. Also, the public domain is not a law. It's the law that is unclear about the fact that a work can go directly in the public domain, because copyright lawyers usually works to protect their clients investments.
It doesn't seem too difficult to publish a work in the public domain; since there's 566 projects in the public domain registered on Freshmeat: http://freshmeat.net/browse/197/
I don't think we can assume that a work is more or less in the public domain, where there is no conditions, not even redistributing the copyright notice. Even an extremely simple license like "no conditions" is technically expressing a condition.
Excerpt from http://www.gnu.org/philosophy/license-list.html#GPLCompatibleLicenses : "Being in the public domain is not a license--rather, it means the material is not copyrighted and no license is needed. Practically speaking, though, if a work is in the public domain, it might as well have an all-permissive non-copyleft free software license. Public domain status is compatible with the GNU GPL."
-- Marc