Christoph Hormann wrote
> It always amazes me how much the map style influences the mapping 
> practice, not only by obvious tagging for the renderer but also in the 
> form of subtle priorities.  Having two separate styles - a 'data 
> verification' style and a 'presentation style' would help reducing this 
> effect. 

It is an interesting question if that would be indeed the case.

I believe that one of the main motivating factors for many mappers for
putting in all the effort of mapping is the reward of contributing to
something important and "big" and being able to be "proud" of the result.
That is imho why you see those subtle shifts in priority depending on what
is displayed on the main map. It is simply more rewarding to work on
something that is perceived to be more "meaningful". However, for this to
work, the main style needs to have a certain popularity among end users
including being embedded into third party websites. If you now split the
styles into one "presentation style" and a "data verification" style, then
the "data verification style" instantly looses that appeal as it will only
be viewed by a few.

Recently there has been a lot of talk about "gameification" of OSM. In my
opinion, one of the most powerful "gameifications" of OSM has been to have a
prominent map shown on osm.org and have it update on a minutely basis. It
really is a rather powerful reward to see your effort being directly
incorporated into the "in production" map within minutes which can and _is_
viewed by millions of people. It is likely a much stronger reward than any
artificial "badge" or "points" and has the advantage it is much less likely
that people will manipulate things to "game the system".  Well, I guess you
do get "gaming the system" to some degree as well in form of "mapping for
the renderer".

So I think the main map really does need to strike a delegate balance
between, and cater for both the "presentation style" and "data verification
style" despite the fact that they are somewhat contradictory. Imho, the
solution of cleaning up the low zoom tiles to "look good" for general use
and then increasing or at least maintaining the detail on z18, z19 (and z20)
is perhaps the best compromise we can achieve.

Kai




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