[Rebuild] Incredible Self-Vandalism
simon at poole.ch
Fri Aug 3 19:06:27 BST 2012
Am 03.08.2012 18:41, schrieb cenSORINg:
> 1. The town of Negres,ti (RO)
> (http://www.openstreetmap.org/?lat=46.835&lon=27.4712&zoom=12&layers=M) (as
> a map point) was deleted. Probably the mapper who first generated the
> point was unlicenced. Later, a bot designed by Romanian licenced users
> put on the map all the Romanian localities with a lot of other data
> (such as the census). Because the 1st contribution was unlicenced,
> every later contribution was deleted even if it was licenced. (After
> all, what licence do you need to name a town on the map??) The stupid
> algorithm didn't consider that the later contributions confirmed and
> reinforced (therefore, "licenced") the former contribution. Many
> localities were deleted like that.
Simple solution: rerun the Romanian bot. And yes, the behaviour was and
> 2. If an unlicensed member interrupted a valid highway to mark a
> bridge, that way is now with that fragment missing. Thousands of
> roads are now chopped in this way. The stupid bot didn't even care to
> restore the continuous highways the way they were before the bridge
> insertion. Now the routing is damaged.
The LWG decided long ago not to require split and mergers to be detected
(essentially because it is reasonably complicated to do correctly and
the net outcome would not be very different), however if there had been
code written for the redaction bot it probably wouldn't have been refused.
> More stupid outcome: if you try now to repair that road's continuity
> by re-adding the deleted bridge, you are in big trouble, because OSM
> threatens you that you ARE NOT ALLOWED to "restore" (in a precise
> manner) what the stupid bot has deleted! If the bot deleted something
> like this:
Nobody has said anything of the sort.
> 3. One of the causes for this unbelievable mess lies deeper in the
> silly design of the very OSM HISTORY. One example of the rot:
> - Member A (having agreed to the licence) makes a way, a road between
> Paris and Geneva. That would be "version 1".
> - Member B (not having agreed to the license) decides for some reason
> to split the way at Dijon. Now the initial way has become 2 ways.
> - Fragment A (Paris-Dijon) will be "version 2" of the initial way and
> will list contributors A and B, but fragment B (Dijon-Geneva) will be
> considered a new way (so "version 1") and ALL the contribution of
> member A to this fragment will be not recognized any more!
> - Then there comes the stupid bot and deletes the "unlicenced"
> fragment B, mocking the work of member A as well as of any user of the
> This way millions of "legitimate" kms of ways have been destroyed.
> Don't think these examples are minor. Multiply them by 10000 and
> understand the bombardment effect on the shredded map. I am sure other
> contributors may give a lot of examples of other catastrophic results
> of this unbelievable terrorist act.
> Converted maps have become useless. The OSM layers or the compatible
> generated maps (such as in the Garmin format) have been used by local
> emergency services or transportation companies. Now the converted maps
> have become useless or even dangerously misleading.
You can easily generate maps from the early July planet dump, which
hasn't become worse due to the redaction and you will be able to do so
for as long as you like.
> A lot of my 4-year long contributions are now destroyed by the stupid
> bot. My town and the surrounding area look now like after a
> bombardment. Street names that I collected with effort, one-way
> properties, POIs, buildings are a mess. Here is one example of what
> the map looks like after the brushoff (like many contributors can find
> in their areas):
You had more than enough forewarning and could have easily remapped
beforehand, now you have to remap in the aftermath.
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