I still think that even two thousand years after our current year would be too far. Not for a complete containment of humanity on Earth. It'd be terribly, terribly crowded, resources would be scarce at best. Even with advanced technology, there's only so much one can do with a planet when they have to feed an ever increasing population. The ocean would be covered at that point, by cities and the like. Not completely, but there'd certainly be cities on it.