Somebody noticed (https://www.openstreetmap.org/user/StephaneP/diary/390290 https://www.openstreetmap.org/user/StephaneP/diary/390290) that OSM isn't even consi

Somebody noticed (https://www.openstreetmap.org/user/StephaneP/diary/390290 https://www.openstreetmap.org/user/StephaneP/diary/390290) that OSM isn't even consistent about which datum it uses. (Discussed in HN at the time: https://news.ycombinator.com/item?id=20460596 https://news.ycombinator.com/item?id=20460596 ). (Though to be fair, the datum error is probably smaller than e.g. GPS error in most cases.) As for the "why" bit, the answer is probably "store and report whatever the user reports".