Marc, good points, thanks. Naturally it will never be decided by software. The tools should aid in continuity preservation, not dictate it. We as a community should definitely how each one of these and other cases should be handled -- to define what "permanence" means.
> > * What if the shop moves to a new address ? What if someone already > recorded the shop at the new location, how do we merge the IDs? > If we decide that a moved shop should have the same id, than this is a case for merge+making one redirect to the other. > > * A restaurant POI and the building it resides in are 2 different > concepts, they both need their own permanent ID. How can we > distinguish them ? If the entire building is a restaurant (e.g. a standalone McDonald's), than it should probably be the same id. But if restaurant is occupying the first floor of a residential bldg, probably two. How does the software knows this when someone "joins" the POI and the > building ? > Software wouldn't know, but an editor should always keep this in mind, and there tools should offer some "join" mechanism. > > * What do you do when a modern part is attached to a listed building ? > Will the building parts have permanent IDs ? > If the building or a road is extended, it should keep the old id. If the new part is notable on its own, the part may get a new id as well, while also being part of the old id. > > This is something you cannot solve with software alone. A human has to > try to decide what you have to do with the permanent IDs in some > (many?) cases. > I would say the human has to decide it in every case :). The software should help with the process. That's why I listed community education as a big part of introducing this. Btw, permanent IDs would help with historical maps too.
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