[OSM-talk] OSM France "BANO" project... openaddresses in France

[Tobias Knerr]

Hi Julien,

On 15.05.2014 18:46, THEVENON Julien wrote:
[...]
> By this way the amount of data loss will be an argument pro or against a
> new licence in the same way some data were loss during the migration
> from CC-by_S to ODBL due to impossible relicencing

the relevant part of the CT was introduced so that OSM would not have to
suffer such a painful loss again. Ideally, it should be possible to
decide on a license change purely based on the merits of the proposed
new license.

> To be completely sure to understand you point of view, I will try to
> rephrase it, please correct me if I`m wrong:
> You consider that we should completely stop to use any open data sources
> available in the world because in the future the community will perhaps
> decide a relicencing that could be incompatible with licences of today
> legal sources ?

No, that would be too radical. There are quite a lot of data sources and
imagery that do not restrict our license at all. Besides Public Domain
sources, this category includes sources where the rights holder has
specifically allowed OSM to use their data.¹

Then there are sources that ask for attribution somewhere on the OSM
website, but nothing beyond that. Technically, these do limit future
licenses, but I get the impression that most consider it highly unlikely
that this would ever be a problem, so I'm more willing to tolerate these.

But what I'm clearly opposing is importing data with a share-alike
license - that is, a license that demands that we stick with one single
license forever.

Tobias

¹ There have been quite a few rights holders who have given OSM such an
explicit permission, so it might be worthwhile to just ask them.