On 07/23/2010 02:02 PM, Anthony wrote:

I'm not sure anyone credible has claimed that [ODbL] is a free license.  The
purpose of a free license is to grant permissions, not to impose
restrictions.

The purpose of a free licence is to protect people's freedom.

PD dedications and BSD licences (permissive licences) do this by allowing anyone who receives the work from its source to do whatever they like with it.

Copyleft and share-alike licences (reciprocal licences) do this by restricting people as much as is necessary to prevent them from imposing further restrictions.

The ODbL is a share-alike licence. If it went too far in using the laws its trying to protect against it might fail by becoming self-defeating. But I don't believe it does.

- Rob.

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