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## Main Question or Discussion Point

In those two links it is written that gravitational energy does not exist.

http://arxiv.org/abs/0908.3322

http://fqxi.org/community/forum/topic/1371

1. I read these articles, but how it is possible to say more clearly that gravitational energy does not exist?

2. What this means on an example of a Schwarchild black hole? It is a simpler example than other generalized derivation in the first link.

3. What this means on an example of a dense spherical mass,which is not black hole and it is not rotating?

4. Does exist still simpler example for visualisation and clarification of the above claims?

http://arxiv.org/abs/0908.3322

http://fqxi.org/community/forum/topic/1371

1. I read these articles, but how it is possible to say more clearly that gravitational energy does not exist?

2. What this means on an example of a Schwarchild black hole? It is a simpler example than other generalized derivation in the first link.

3. What this means on an example of a dense spherical mass,which is not black hole and it is not rotating?

4. Does exist still simpler example for visualisation and clarification of the above claims?