>> The best thing is not to allow invalid geometries to begin with. > The best thing for whom? Mappers. Noone enjoys untangling broken mulipolygons. And inva

>> The best thing is not to allow invalid geometries to begin with. > The best thing for whom? Mappers. Noone enjoys untangling broken mulipolygons. And invalid geometries, by definition, are never desirable or intentional. I guess that future data consumers (including authors of editors) also would benefit.