Dear user frutellake,

introducing errors into OSM on purpose is vandalism. Performing vandalism for “research” reasons doesn’t make it better.

Please don’t do this ever again, and I also suggest that you refrain from using the results of this “research” in a publication because otherwise that publication is likely to attract heavy criticism from the OpenStreetMap community.

Best regards
Frederik Ramm a.k.a. woodpeck
OSMF Data Working Group