[jamesfinlayson]

> this is part of why published maps often have intentional, hopefully subtle errors in them

Yes I remember reading a few years ago about the Royal Australian Navy trying to find Sand Island which I think was some tiny island marked on maps of part of the Pacific Ocean off the coast of Australia - what they found was open ocean 1,100m deep, and concluded it was the map-maker's "mark".

[mattkrause]

The consensus was that Sandy Island was not a copyright “trap.” Some of the sightings may have been floating pumice from an undersea volcano, and the “confirmations” came from a chain of errors.

https://en.wikipedia.org/wiki/Sandy_Island,_New_Caledonia