On 28/09/2010 01:41, Nathan Edgars II wrote:
On Mon, Sep 27, 2010 at 8:38 PM, Dave F.<dave...@madasafish.com>  wrote:
  On 28/09/2010 01:11, Nathan Edgars II wrote:
On Mon, Sep 27, 2010 at 8:00 PM, Dave F.<dave...@madasafish.com>   wrote:
But only add what is actually visibly there now. Not what was there fifty
years ago.
What was there 50 years ago is useful,
I agree

  and removing it would be
vandalism.
I disagree. How can it be vandalism if it's not there anymore?
Because we don't only map what's currently there.

I think the vast majority of us do. Looking at recent (since OSM started) developments in my vicinity, I see no evidence that any historical elements were retained, & I have seen no earlier data being added in any place I've looked.

  You can argue about whether Mapnik should show it, but
don't remove it.
For those who want to keep historic records (&  I think there should be),
they should take a record of current data at regular intervals&  keep it in
a separate database.

If historic data was kept within OSM it would become far to cluttered.
Strawman. We're only talking about former railway alignments.

Hmm... not sure you understand the meaning of the straw man argument.

-----

You're statement "Because we don't only map what's currently there." proves you (& I) have moved the discussion on to include all data.

Why do you think it should remain in the OSM database?
Because it's of local interest even where no linear traces remain.

As I said before (I shall repeat as you evidently didn't read it), I agree, it *is* of interest & the data should be kept, just not within the OSM database.

From your last missive:

"Because we don't only map what's currently there.
To expand on this:
http://osmdoc.com/en/tag/old_name/
http://osmdoc.com/en/tag/old_ref/";

This is a poor argument. These are clearly for *current* entities that are 
still in existence, but have been renamed.

Regards
Dave F.




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