Martin Koppenhoefer wrote: > the world is not black and white This (or some other message) reminded of one other very accepted case where the verifiability could be contested, but isn't. People do map underground pipelines (water, drain, heat etc.), either interpolating between manholes or markers, or by having seen an open construction/repait pit. A pit (usually) leaves a strip of patched pavement which the next mapper can use to "verify" the pipeline alignment, but after the whole road is then repaved again removing any "naked eye evidence" of the turns the pipeline takes, nobody is suggesting that the mapped curves and turns in the pipeline should be removed. We trust the mapper and their sources - and just hope they described them in the changeset tags.
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