[OSM-talk] razed railways and other things that don't exist today

[Warin]

I have placed what I believe is a summary of this discussion on the OSM 
wiki for lifecycle

It reads

"The following tags function is to reduce the possibility of a mapper 
remapping the feature from existing satellite imagery that shows the old 
state of the feature. Once the OSM available satellite imagery does not 
show the feature the feature can safely be removed from OSM. Renders 
cannot rely on OSM preserving physically vanished history."

There after follow the tags 'demolished', 'removed', 'destroyed' and 
'razed'.

https://wiki.openstreetmap.org/wiki/Lifecycle_prefix#Stages_of_decay


If there are any further thoughts or even corrections to my text above 
then please post them here.


My own thoughts?

I have not placed any warning about mechanical edits to seek these out 
as enough warning is evident in the requirement for it to be not shown 
in the OSM satellite imagery, which would discourage me so I think it 
will work with others.